diff --git a/code/__defines/misc.dm b/code/__defines/misc.dm
index d8c4c69e0a..aa334224ad 100644
--- a/code/__defines/misc.dm
+++ b/code/__defines/misc.dm
@@ -288,4 +288,18 @@ var/global/list/##LIST_NAME = list();\
 #define IS_SCREWDRIVER		"screwdriver"
 #define IS_CROWBAR			"crowbar"
 #define IS_WIRECUTTER		"wirecutter"
-#define IS_WRENCH			"wrench"
\ No newline at end of file
+#define IS_WRENCH			"wrench"
+
+// RCD modes. Used on the RCD, and gets passed to an object's rcd_act() when an RCD is used on it, to determine what happens.
+#define RCD_FLOORWALL		"Floor / Wall"		// Builds plating on space/ground/open tiles. Builds a wall when on floors. Finishes walls when used on girders.
+#define RCD_AIRLOCK			"Airlock"			// Builds an airlock on the tile if one isn't already there.
+#define RCD_WINDOWGRILLE	"Window / Grille" 	// Builds a full tile window and grille pair on floors.
+#define RCD_DECONSTRUCT		"Deconstruction"	// Removes various things. Still consumes compressed matter.
+
+#define RCD_VALUE_MODE		"mode"
+#define RCD_VALUE_DELAY		"delay"
+#define RCD_VALUE_COST		"cost"
+
+
+#define RCD_SHEETS_PER_MATTER_UNIT	4	// Each physical material sheet is worth four matter units.
+#define RCD_MAX_CAPACITY			30 * RCD_SHEETS_PER_MATTER_UNIT
\ No newline at end of file
diff --git a/code/datums/progressbar.dm b/code/datums/progressbar.dm
index 8d2edbeeb9..bf38ab7a1c 100644
--- a/code/datums/progressbar.dm
+++ b/code/datums/progressbar.dm
@@ -15,6 +15,7 @@
 	bar = image('icons/effects/progessbar.dmi', target, "prog_bar_0")
 	bar.appearance_flags = APPEARANCE_UI_IGNORE_ALPHA
 	bar.pixel_y = 32
+	bar.plane = PLANE_PLAYER_HUD
 	src.user = user
 	if(user)
 		client = user.client
diff --git a/code/game/atoms.dm b/code/game/atoms.dm
index 983c92cdf5..d1289a23de 100644
--- a/code/game/atoms.dm
+++ b/code/game/atoms.dm
@@ -209,6 +209,16 @@
 /atom/proc/fire_act()
 	return
 
+
+// Returns an assoc list of RCD information.
+// Example would be: list(RCD_VALUE_MODE = RCD_DECONSTRUCT, RCD_VALUE_DELAY = 50, RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 4)
+// This occurs before rcd_act() is called, and it won't be called if it returns FALSE.
+/atom/proc/rcd_values(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	return FALSE
+
+/atom/proc/rcd_act(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	return
+
 /atom/proc/melt()
 	return
 
diff --git a/code/game/machinery/doors/airlock.dm b/code/game/machinery/doors/airlock.dm
index 327b1e11cd..541e461f27 100644
--- a/code/game/machinery/doors/airlock.dm
+++ b/code/game/machinery/doors/airlock.dm
@@ -1260,3 +1260,24 @@ About the new airlock wires panel:
 		src.open()
 		src.lock()
 	return
+
+
+/obj/machinery/door/airlock/rcd_values(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	switch(passed_mode)
+		if(RCD_DECONSTRUCT)
+			// Old RCD code made it cost 10 units to decon an airlock.
+			// Now the new one costs ten "sheets".
+			return list(
+				RCD_VALUE_MODE = RCD_DECONSTRUCT,
+				RCD_VALUE_DELAY = 5 SECONDS,
+				RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 10
+			)
+	return FALSE
+
+/obj/machinery/door/airlock/rcd_act(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	switch(passed_mode)
+		if(RCD_DECONSTRUCT)
+			to_chat(user, span("notice", "You deconstruct \the [src]."))
+			qdel(src)
+			return TRUE
+	return FALSE
diff --git a/code/game/mecha/equipment/tools/tools.dm b/code/game/mecha/equipment/tools/tools.dm
index dd4472282c..73bddbb433 100644
--- a/code/game/mecha/equipment/tools/tools.dm
+++ b/code/game/mecha/equipment/tools/tools.dm
@@ -244,100 +244,43 @@
 	equip_cooldown = 10
 	energy_drain = 250
 	range = MELEE|RANGED
-	var/mode = 0 //0 - deconstruct, 1 - wall or floor, 2 - airlock.
-	var/disabled = 0 //malf
-
 	equip_type = EQUIP_SPECIAL
+	var/obj/item/weapon/rcd/electric/mounted/mecha/my_rcd = null
+
+/obj/item/mecha_parts/mecha_equipment/tool/rcd/initialize()
+	my_rcd = new(src)
+	return ..()
+
+/obj/item/mecha_parts/mecha_equipment/tool/rcd/Destroy()
+	QDEL_NULL(my_rcd)
+	return ..()
 
 /obj/item/mecha_parts/mecha_equipment/tool/rcd/action(atom/target)
-	if(istype(target,/area/shuttle)||istype(target, /turf/space/transit))//>implying these are ever made -Sieve
-		disabled = 1
-	else
-		disabled = 0
-	if(!istype(target, /turf) && !istype(target, /obj/machinery/door/airlock))
-		target = get_turf(target)
-	if(!action_checks(target) || disabled || get_dist(chassis, target)>3) return
-	playsound(chassis, 'sound/machines/click.ogg', 50, 1)
-	//meh
-	switch(mode)
-		if(0)
-			if (istype(target, /turf/simulated/wall))
-				occupant_message("Deconstructing [target]...")
-				set_ready_state(0)
-				if(do_after_cooldown(target))
-					if(disabled) return
-					chassis.spark_system.start()
-					target:ChangeTurf(/turf/simulated/floor/plating)
-					playsound(target, 'sound/items/Deconstruct.ogg', 50, 1)
-					chassis.use_power(energy_drain)
-			else if (istype(target, /turf/simulated/floor))
-				occupant_message("Deconstructing [target]...")
-				set_ready_state(0)
-				if(do_after_cooldown(target))
-					if(disabled) return
-					chassis.spark_system.start()
-					target:ChangeTurf(get_base_turf_by_area(target))
-					playsound(target, 'sound/items/Deconstruct.ogg', 50, 1)
-					chassis.use_power(energy_drain)
-			else if (istype(target, /obj/machinery/door/airlock))
-				occupant_message("Deconstructing [target]...")
-				set_ready_state(0)
-				if(do_after_cooldown(target))
-					if(disabled) return
-					chassis.spark_system.start()
-					qdel(target)
-					playsound(target, 'sound/items/Deconstruct.ogg', 50, 1)
-					chassis.use_power(energy_drain)
-		if(1)
-			if(istype(target, /turf/space) || istype(target,get_base_turf_by_area(target)))
-				occupant_message("Building Floor...")
-				set_ready_state(0)
-				if(do_after_cooldown(target))
-					if(disabled) return
-					target:ChangeTurf(/turf/simulated/floor/plating)
-					playsound(target, 'sound/items/Deconstruct.ogg', 50, 1)
-					chassis.spark_system.start()
-					chassis.use_power(energy_drain*2)
-			else if(istype(target, /turf/simulated/floor))
-				occupant_message("Building Wall...")
-				set_ready_state(0)
-				if(do_after_cooldown(target))
-					if(disabled) return
-					target:ChangeTurf(/turf/simulated/wall)
-					playsound(target, 'sound/items/Deconstruct.ogg', 50, 1)
-					chassis.spark_system.start()
-					chassis.use_power(energy_drain*2)
-		if(2)
-			if(istype(target, /turf/simulated/floor))
-				occupant_message("Building Airlock...")
-				set_ready_state(0)
-				if(do_after_cooldown(target))
-					if(disabled) return
-					chassis.spark_system.start()
-					var/obj/machinery/door/airlock/T = new /obj/machinery/door/airlock(target)
-					T.autoclose = 1
-					playsound(target, 'sound/items/Deconstruct.ogg', 50, 1)
-					playsound(target, 'sound/effects/sparks2.ogg', 50, 1)
-					chassis.use_power(energy_drain*2)
-	return
+	if(!action_checks(target) || get_dist(chassis, target) > 3)
+		return FALSE
+
+	my_rcd.use_rcd(target, chassis.occupant)
 
 /obj/item/mecha_parts/mecha_equipment/tool/rcd/Topic(href,href_list)
 	..()
 	if(href_list["mode"])
-		mode = text2num(href_list["mode"])
-		switch(mode)
-			if(0)
-				occupant_message("Switched RCD to Deconstruct.")
-			if(1)
-				occupant_message("Switched RCD to Construct.")
-			if(2)
-				occupant_message("Switched RCD to Construct Airlock.")
-	return
-
+		my_rcd.mode_index = text2num(href_list["mode"])
+		occupant_message("RCD reconfigured to '[my_rcd.modes[my_rcd.mode_index]]'.")
+/*
 /obj/item/mecha_parts/mecha_equipment/tool/rcd/get_equip_info()
 	return "[..()] \[<a href='?src=\ref[src];mode=0'>D</a>|<a href='?src=\ref[src];mode=1'>C</a>|<a href='?src=\ref[src];mode=2'>A</a>\]"
+*/
+/obj/item/mecha_parts/mecha_equipment/tool/rcd/get_equip_info()
+	var/list/content = list(..()) // This is all for one line, in the interest of string tree conservation.
+	var/i = 1
+	content += "<br>"
+	for(var/mode in my_rcd.modes)
+		content += "     <a href='?src=\ref[src];mode=[i]'>[mode]</a>"
+		if(i < my_rcd.modes.len)
+			content += "<br>"
+		i++
 
-
+	return content.Join()
 
 
 /obj/item/mecha_parts/mecha_equipment/teleporter
diff --git a/code/game/objects/items/weapons/RCD.dm b/code/game/objects/items/weapons/RCD.dm
index d9543fed20..a0587d5dbb 100644
--- a/code/game/objects/items/weapons/RCD.dm
+++ b/code/game/objects/items/weapons/RCD.dm
@@ -1,167 +1,291 @@
-//Contains the rapid construction device.
+// Contains the rapid construction device.
 /obj/item/weapon/rcd
 	name = "rapid construction device"
-	desc = "A device used to rapidly build walls and floors."
-	icon = 'icons/obj/items.dmi'
+	desc = "A device used to rapidly build and deconstruct. Reload with compressed matter cartridges."
+	icon = 'icons/obj/tools.dmi'
 	icon_state = "rcd"
-	opacity = 0
-	density = 0
-	anchored = 0.0
-	flags = CONDUCT
-	force = 10.0
-	throwforce = 10.0
+	item_state = "rcd"
+	flags = CONDUCT | NOBLUDGEON
+	force = 10
+	throwforce = 10
 	throw_speed = 1
 	throw_range = 5
 	w_class = ITEMSIZE_NORMAL
 	origin_tech = list(TECH_ENGINEERING = 4, TECH_MATERIAL = 2)
 	matter = list(DEFAULT_WALL_MATERIAL = 50000)
-	preserve_item = 1
+	preserve_item = TRUE // RCDs are pretty important.
 	var/datum/effect/effect/system/spark_spread/spark_system
 	var/stored_matter = 0
-	var/max_stored_matter = 30
-	var/working = 0
-	var/mode = 1
-	var/list/modes = list("Floor & Walls","Airlock","Deconstruct")
-	var/canRwall = 0
-	var/disabled = 0
+	var/max_stored_matter = RCD_MAX_CAPACITY
+	var/ranged = FALSE
+	var/busy = FALSE
+	var/allow_concurrent_building = FALSE // If true, allows for multiple RCD builds at the same time.
+	var/mode_index = 1
+	var/list/modes = list(RCD_FLOORWALL, RCD_AIRLOCK, RCD_WINDOWGRILLE, RCD_DECONSTRUCT)
+	var/can_remove_rwalls = FALSE
+	var/airlock_type = /obj/machinery/door/airlock
+	var/window_type = /obj/structure/window/reinforced/full
+	var/material_to_use = DEFAULT_WALL_MATERIAL // So badmins can make RCDs that print diamond walls.
+	var/make_rwalls = FALSE // If true, when building walls, they will be reinforced.
 
-/obj/item/weapon/rcd/attack()
-	return 0
-
-/obj/item/weapon/rcd/proc/can_use(var/mob/user,var/turf/T)
-	var/usable = 0
-	if(user.Adjacent(T) && user.get_active_hand() == src && !user.stat && !user.restrained())
-		usable = 1
-	if(!user.IsAdvancedToolUser() && istype(user, /mob/living/simple_animal))
-		var/mob/living/simple_animal/S = user
-		if(!S.IsHumanoidToolUser(src))
-			usable = 0
-	return usable
-
-/obj/item/weapon/rcd/examine()
-	..()
-	if(src.type == /obj/item/weapon/rcd && loc == usr)
-		usr << "It currently holds [stored_matter]/[max_stored_matter] matter-units."
-
-/obj/item/weapon/rcd/New()
-	..()
+/obj/item/weapon/rcd/initialize()
 	src.spark_system = new /datum/effect/effect/system/spark_spread
 	spark_system.set_up(5, 0, src)
 	spark_system.attach(src)
+	return ..()
 
 /obj/item/weapon/rcd/Destroy()
-	qdel(spark_system)
+	QDEL_NULL(spark_system)
 	spark_system = null
 	return ..()
 
-/obj/item/weapon/rcd/attackby(obj/item/weapon/W, mob/user)
+/obj/item/weapon/rcd/examine(mob/user)
+	..()
+	to_chat(user, display_resources())
 
+// Used to show how much stuff (matter units, cell charge, etc) is left inside.
+/obj/item/weapon/rcd/proc/display_resources()
+	return "It currently holds [stored_matter]/[max_stored_matter] matter-units."
+
+// Used to add new cartridges.
+/obj/item/weapon/rcd/attackby(obj/item/weapon/W, mob/user)
 	if(istype(W, /obj/item/weapon/rcd_ammo))
 		var/obj/item/weapon/rcd_ammo/cartridge = W
 		if((stored_matter + cartridge.remaining) > max_stored_matter)
-			to_chat(user, "<span class='notice'>The RCD can't hold that many additional matter-units.</span>")
-			return
+			to_chat(user, span("warning", "The RCD can't hold that many additional matter-units."))
+			return FALSE
 		stored_matter += cartridge.remaining
 		user.drop_from_inventory(W)
 		qdel(W)
 		playsound(src.loc, 'sound/machines/click.ogg', 50, 1)
-		to_chat(user, "<span class='notice'>The RCD now holds [stored_matter]/[max_stored_matter] matter-units.</span>")
-		return
-	..()
+		to_chat(user, span("notice", "The RCD now holds [stored_matter]/[max_stored_matter] matter-units."))
+		return TRUE
+	return ..()
 
-/obj/item/weapon/rcd/attack_self(mob/user)
-	//Change the mode
-	if(++mode > 3) mode = 1
-	user << "<span class='notice'>Changed mode to '[modes[mode]]'</span>"
-	playsound(src.loc, 'sound/effects/pop.ogg', 50, 0)
-	if(prob(20)) src.spark_system.start()
-
-/obj/item/weapon/rcd/afterattack(atom/A, mob/user, proximity)
-	if(!proximity) return
-	if(disabled && !isrobot(user))
-		return 0
-	if(istype(get_area(A),/area/shuttle)||istype(get_area(A),/turf/space/transit))
-		return 0
-	return alter_turf(A,user,(mode == 3))
-
-/obj/item/weapon/rcd/proc/useResource(var/amount, var/mob/user)
-	if(stored_matter < amount)
-		return 0
-	stored_matter -= amount
-	return 1
-
-/obj/item/weapon/rcd/proc/alter_turf(var/turf/T,var/mob/user,var/deconstruct)
-
-	var/build_cost = 0
-	var/build_type
-	var/build_turf
-	var/build_delay
-	var/build_other
-
-	if(working == 1)
-		return 0
-
-	if(mode == 3 && istype(T,/obj/machinery/door/airlock))
-		build_cost =  10
-		build_delay = 50
-		build_type = "airlock"
-	else if(mode == 2 && !deconstruct && istype(T,/turf/simulated/floor))
-		build_cost =  10
-		build_delay = 50
-		build_type = "airlock"
-		build_other = /obj/machinery/door/airlock
-	else if(!deconstruct && isturf(T) && (istype(T,/turf/space) || istype(T,get_base_turf_by_area(T))))
-		build_cost =  1
-		build_type =  "floor"
-		build_turf =  /turf/simulated/floor/airless
-	else if(!deconstruct && istype(T,/turf/simulated/mineral/floor))
-		build_cost =  1
-		build_type =  "floor"
-		build_turf =  /turf/simulated/floor/plating
-	else if(deconstruct && istype(T,/turf/simulated/wall))
-		var/turf/simulated/wall/W = T
-		build_delay = deconstruct ? 50 : 40
-		build_cost =  5
-		build_type =  (!canRwall && W.reinf_material) ? null : "wall"
-		build_turf =  /turf/simulated/floor
-	else if(istype(T,/turf/simulated/floor) || (istype(T,/turf/simulated/mineral) && !T.density))
-		var/turf/simulated/F = T
-		build_delay = deconstruct ? 50 : 20
-		build_cost =  deconstruct ? 10 : 3
-		build_type =  deconstruct ? "floor" : "wall"
-		build_turf =  deconstruct ? get_base_turf_by_area(F) : /turf/simulated/wall
-
-	if(!build_type)
-		working = 0
-		return 0
-
-	if(!useResource(build_cost, user))
-		user << "Insufficient resources."
-		return 0
-
-	playsound(src.loc, 'sound/machines/click.ogg', 50, 1)
-
-	working = 1
-	user << "[(deconstruct ? "Deconstructing" : "Building")] [build_type]..."
-
-	if(build_delay && !do_after(user, build_delay))
-		working = 0
-		return 0
-
-	working = 0
-	if(build_delay && !can_use(user,T))
-		return 0
-
-	if(build_turf)
-		T.ChangeTurf(build_turf, preserve_outdoors = TRUE)
-	else if(build_other)
-		new build_other(T)
+// Changes which mode it is on.
+/obj/item/weapon/rcd/attack_self(mob/living/user)
+	if(mode_index >= modes.len) // Shouldn't overflow unless someone messes with it in VV poorly but better safe than sorry.
+		mode_index = 1
 	else
-		qdel(T)
+		mode_index++
 
-	playsound(src.loc, 'sound/items/Deconstruct.ogg', 50, 1)
-	return 1
+	to_chat(user, span("notice", "Changed mode to '[modes[mode_index]]'."))
+	playsound(src.loc, 'sound/effects/pop.ogg', 50, 0)
 
+	if(prob(20))
+		src.spark_system.start()
+
+// Removes resources if the RCD can afford it.
+/obj/item/weapon/rcd/proc/consume_resources(amount)
+	if(!can_afford(amount))
+		return FALSE
+	stored_matter -= amount
+	return TRUE
+
+// Useful for testing before actually paying (e.g. before a do_after() ).
+/obj/item/weapon/rcd/proc/can_afford(amount)
+	return stored_matter >= amount
+
+/obj/item/weapon/rcd/afterattack(atom/A, mob/living/user, proximity)
+	if(!ranged && !proximity)
+		return FALSE
+	use_rcd(A, user)
+
+// Used to call rcd_act() on the atom hit.
+/obj/item/weapon/rcd/proc/use_rcd(atom/A, mob/living/user)
+	if(busy && !allow_concurrent_building)
+		to_chat(user, span("warning", "\The [src] is busy finishing its current operation, be patient."))
+		return FALSE
+
+	var/list/rcd_results = A.rcd_values(user, src, modes[mode_index])
+	if(!rcd_results)
+		to_chat(user, span("warning", "\The [src] blinks a red light as you point it towards \the [A], indicating \
+		that it won't work. Try changing the mode, or use it on something else."))
+		return FALSE
+	if(!can_afford(rcd_results[RCD_VALUE_COST]))
+		to_chat(user, span("warning", "\The [src] lacks the required material to start."))
+		return FALSE
+
+	playsound(get_turf(src), 'sound/machines/click.ogg', 50, 1)
+
+	var/true_delay = rcd_results[RCD_VALUE_DELAY] * toolspeed
+
+	var/datum/beam/rcd_beam = null
+	if(ranged)
+		var/atom/movable/beam_origin = user // This is needed because mecha pilots are inside an object and the beam won't be made if it tries to attach to them..
+		if(!isturf(beam_origin.loc))
+			beam_origin = user.loc
+		rcd_beam = beam_origin.Beam(A, icon_state = "rped_upgrade", time = max(true_delay, 5))
+	busy = TRUE
+
+	if(do_after(user, true_delay, target = A))
+		busy = FALSE
+		// Doing another check in case we lost matter during the delay for whatever reason.
+		if(!can_afford(rcd_results[RCD_VALUE_COST]))
+			to_chat(user, span("warning", "\The [src] lacks the required material to finish the operation."))
+			return FALSE
+		if(A.rcd_act(user, src, rcd_results[RCD_VALUE_MODE]))
+			consume_resources(rcd_results[RCD_VALUE_COST])
+			playsound(get_turf(A), 'sound/items/deconstruct.ogg', 50, 1)
+			return TRUE
+
+	// If they moved, kill the beam immediately.
+	qdel(rcd_beam)
+	busy = FALSE
+	return FALSE
+
+// RCD variants.
+
+// This one starts full.
+/obj/item/weapon/rcd/loaded/initialize()
+	stored_matter = max_stored_matter
+	return ..()
+
+// This one makes cooler walls by using an alternative material.
+/obj/item/weapon/rcd/shipwright
+	name = "shipwright's rapid construction device"
+	desc = "A device used to rapidly build and deconstruct. This version creates a stronger variant of wall, often \
+	used in the construction of hulls for starships. Reload with compressed matter cartridges."
+	material_to_use = MAT_STEELHULL
+
+/obj/item/weapon/rcd/shipwright/loaded/initialize()
+	stored_matter = max_stored_matter
+	return ..()
+
+
+/obj/item/weapon/rcd/advanced
+	name = "advanced rapid construction device"
+	desc = "A device used to rapidly build and deconstruct. This version works at a range, builds faster, and has a much larger capacity. \
+	Reload with compressed matter cartridges."
+	icon_state = "adv_rcd"
+	ranged = TRUE
+	toolspeed = 0.5 // Twice as fast.
+	max_stored_matter = RCD_MAX_CAPACITY * 3 // Three times capacity.
+
+/obj/item/weapon/rcd/advanced/loaded/initialize()
+	stored_matter = max_stored_matter
+	return ..()
+
+
+// Electric RCDs.
+// Currently just a base for the mounted RCDs.
+// Currently there isn't a way to swap out the cells.
+// One could be added if there is demand to do so.
+/obj/item/weapon/rcd/electric
+	name = "electric rapid construction device"
+	desc = "A device used to rapidly build and deconstruct. It runs directly off of electricity, no matter cartridges needed."
+	icon_state = "electric_rcd"
+	var/obj/item/weapon/cell/cell = null
+	var/make_cell = TRUE // If false, initialize() won't spawn a cell for this.
+	var/electric_cost_coefficent = 83.33 // Higher numbers make it less efficent. 86.3... means it should matche the standard RCD capacity on a 10k cell.
+
+/obj/item/weapon/rcd/electric/initialize()
+	if(make_cell)
+		cell = new /obj/item/weapon/cell/high(src)
+	return ..()
+
+/obj/item/weapon/rcd/electric/Destroy()
+	if(cell)
+		QDEL_NULL(cell)
+	return ..()
+
+/obj/item/weapon/rcd/electric/get_cell()
+	return cell
+
+/obj/item/weapon/rcd/electric/can_afford(amount) // This makes it so borgs won't drain their last sliver of charge by mistake, as a bonus.
+	var/obj/item/weapon/cell/cell = get_cell()
+	if(cell)
+		return cell.check_charge(amount * electric_cost_coefficent)
+	return FALSE
+
+/obj/item/weapon/rcd/electric/consume_resources(amount)
+	if(!can_afford(amount))
+		return FALSE
+	var/obj/item/weapon/cell/cell = get_cell()
+	return cell.checked_use(amount * electric_cost_coefficent)
+
+/obj/item/weapon/rcd/electric/display_resources()
+	var/obj/item/weapon/cell/cell = get_cell()
+	if(cell)
+		return "The power source connected to \the [src] has a charge of [cell.percent()]%."
+	return "It lacks a source of power, and cannot function."
+
+
+
+// 'Mounted' RCDs, used for borgs/RIGs/Mechas, all of which use their cells to drive the RCD.
+/obj/item/weapon/rcd/electric/mounted
+	name = "mounted electric rapid construction device"
+	desc = "A device used to rapidly build and deconstruct. It runs directly off of electricity from an external power source."
+	make_cell = FALSE
+
+/obj/item/weapon/rcd/electric/mounted/get_cell()
+	return get_external_power_supply()
+
+/obj/item/weapon/rcd/electric/mounted/proc/get_external_power_supply()
+	if(isrobot(loc)) // In a borg.
+		var/mob/living/silicon/robot/R = loc
+		return R.cell
+	if(istype(loc, /obj/item/rig_module)) // In a RIG.
+		var/obj/item/rig_module/module = loc
+		if(module.holder) // Is it attached to a RIG?
+			return module.holder.cell
+	if(istype(loc, /obj/item/mecha_parts/mecha_equipment)) // In a mech.
+		var/obj/item/mecha_parts/mecha_equipment/ME = loc
+		if(ME.chassis) // Is the part attached to a mech?
+			return ME.chassis.cell
+	return null
+
+
+// RCDs for borgs.
+/obj/item/weapon/rcd/electric/mounted/borg
+	can_remove_rwalls = TRUE
+	desc = "A device used to rapidly build and deconstruct. It runs directly off of electricity, drawing directly from your cell."
+	electric_cost_coefficent = 41.66 // Twice as efficent, out of pity.
+	toolspeed = 0.5 // Twice as fast, since borg versions typically have this.
+
+/obj/item/weapon/rcd/electric/mounted/borg/lesser
+	can_remove_rwalls = FALSE
+
+
+// RCDs for RIGs.
+/obj/item/weapon/rcd/electric/mounted/rig
+
+
+// RCDs for Mechs.
+/obj/item/weapon/rcd/electric/mounted/mecha
+	ranged = TRUE
+	toolspeed = 0.5
+
+
+// Infinite use RCD for debugging/adminbuse.
+/obj/item/weapon/rcd/debug
+	name = "self-repleshing rapid construction device"
+	desc = "An RCD that appears to be plated with gold. For some reason it also seems to just \
+	be vastly superior to all other RCDs ever created, possibly due to it being colored gold."
+	icon_state = "debug_rcd"
+	ranged = TRUE
+	can_remove_rwalls = TRUE
+	allow_concurrent_building = TRUE
+	toolspeed = 0.25 // Four times as fast.
+
+/obj/item/weapon/rcd/debug/can_afford(amount)
+	return TRUE
+
+/obj/item/weapon/rcd/debug/consume_resources(amount)
+	return TRUE
+
+/obj/item/weapon/rcd/debug/attackby(obj/item/weapon/W, mob/user)
+	if(istype(W, /obj/item/weapon/rcd_ammo))
+		to_chat(user, span("notice", "\The [src] makes its own material, no need to add more."))
+		return FALSE
+	return ..()
+
+/obj/item/weapon/rcd/debug/display_resources()
+	return "It has UNLIMITED POWER!"
+
+
+
+// Ammo for the (non-electric) RCDs.
 /obj/item/weapon/rcd_ammo
 	name = "compressed matter cartridge"
 	desc = "Highly compressed matter for the RCD."
@@ -171,50 +295,11 @@
 	w_class = ITEMSIZE_SMALL
 	origin_tech = list(TECH_MATERIAL = 2)
 	matter = list(DEFAULT_WALL_MATERIAL = 30000,"glass" = 15000)
-	var/remaining = 10
+	var/remaining = RCD_MAX_CAPACITY / 3
 
 /obj/item/weapon/rcd_ammo/large
 	name = "high-capacity matter cartridge"
 	desc = "Do not ingest."
 	matter = list(DEFAULT_WALL_MATERIAL = 45000,"glass" = 22500)
-	remaining = 30
 	origin_tech = list(TECH_MATERIAL = 4)
-
-/obj/item/weapon/rcd/borg
-	canRwall = 1
-
-/obj/item/weapon/rcd/borg/lesser
-	canRwall = FALSE
-
-/obj/item/weapon/rcd/borg/useResource(var/amount, var/mob/user)
-	if(isrobot(user))
-		var/mob/living/silicon/robot/R = user
-		if(R.cell)
-			var/cost = amount*30
-			if(R.cell.charge >= cost)
-				R.cell.use(cost)
-				return 1
-	return 0
-
-/obj/item/weapon/rcd/borg/attackby()
-	return
-
-/obj/item/weapon/rcd/borg/can_use(var/mob/user,var/turf/T)
-	return (user.Adjacent(T) && !user.stat)
-
-
-/obj/item/weapon/rcd/mounted/useResource(var/amount, var/mob/user)
-	var/cost = amount*130 //so that a rig with default powercell can build ~2.5x the stuff a fully-loaded RCD can.
-	if(istype(loc,/obj/item/rig_module))
-		var/obj/item/rig_module/module = loc
-		if(module.holder && module.holder.cell)
-			if(module.holder.cell.charge >= cost)
-				module.holder.cell.use(cost)
-				return 1
-	return 0
-
-/obj/item/weapon/rcd/mounted/attackby()
-	return
-
-/obj/item/weapon/rcd/mounted/can_use(var/mob/user,var/turf/T)
-	return (user.Adjacent(T) && !user.stat && !user.restrained())
+	remaining = RCD_MAX_CAPACITY
diff --git a/code/game/objects/structures/girders.dm b/code/game/objects/structures/girders.dm
index b61d01d2a4..058398d850 100644
--- a/code/game/objects/structures/girders.dm
+++ b/code/game/objects/structures/girders.dm
@@ -353,3 +353,54 @@
 		to_chat(user, "<span class='notice'>You drill through the girder!</span>")
 		new /obj/effect/decal/remains/human(get_turf(src))
 		dismantle()
+
+
+/obj/structure/girder/rcd_values(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	var/turf/simulated/T = get_turf(src)
+	if(!istype(T) || T.density)
+		return FALSE
+
+	switch(passed_mode)
+		if(RCD_FLOORWALL)
+			// Finishing a wall costs two sheets.
+			var/cost = RCD_SHEETS_PER_MATTER_UNIT * 2
+			// Rwalls cost three to finish.
+			if(the_rcd.make_rwalls)
+				cost += RCD_SHEETS_PER_MATTER_UNIT * 1
+			return list(
+				RCD_VALUE_MODE = RCD_FLOORWALL,
+				RCD_VALUE_DELAY = 2 SECONDS,
+				RCD_VALUE_COST = cost
+			)
+		if(RCD_DECONSTRUCT)
+			return list(
+				RCD_VALUE_MODE = RCD_DECONSTRUCT,
+				RCD_VALUE_DELAY = 2 SECONDS,
+				RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 5
+			)
+	return FALSE
+
+/obj/structure/girder/rcd_act(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	var/turf/simulated/T = get_turf(src)
+	if(!istype(T) || T.density) // Should stop future bugs of people bringing girders to centcom and RCDing them, or somehow putting a girder on a durasteel wall and deconning it.
+		return FALSE
+
+	switch(passed_mode)
+		if(RCD_FLOORWALL)
+			to_chat(user, span("notice", "You finish a wall."))
+			// This is mostly the same as using on a floor. The girder's material is preserved, however.
+			T.ChangeTurf(/turf/simulated/wall)
+			var/turf/simulated/wall/new_T = get_turf(src) // Ref to the wall we just built.
+			// Apparently set_material(...) for walls requires refs to the material singletons and not strings.
+			// This is different from how other material objects with their own set_material(...) do it, but whatever.
+			var/material/M = name_to_material[the_rcd.material_to_use]
+			new_T.set_material(M, the_rcd.make_rwalls ? M : null, girder_material)
+			new_T.add_hiddenprint(user)
+			qdel(src)
+			return TRUE
+
+		if(RCD_DECONSTRUCT)
+			to_chat(user, span("notice", "You deconstruct \the [src]."))
+			qdel(src)
+			return TRUE
+
diff --git a/code/game/objects/structures/grille.dm b/code/game/objects/structures/grille.dm
index f8d532688c..50fa3e8c6e 100644
--- a/code/game/objects/structures/grille.dm
+++ b/code/game/objects/structures/grille.dm
@@ -96,7 +96,9 @@
 /obj/structure/grille/attackby(obj/item/W as obj, mob/user as mob)
 	if(!istype(W))
 		return
-	if(W.is_wirecutter())
+	if(istype(W, /obj/item/weapon/rcd)) // To stop us from hitting the grille when building windows, because grilles don't let parent handle it properly.
+		return FALSE
+	else if(W.is_wirecutter())
 		if(!shock(user, 100))
 			playsound(src, W.usesound, 100, 1)
 			new /obj/item/stack/rods(get_turf(src), destroyed ? 1 : 2)
@@ -252,3 +254,38 @@
 
 /obj/structure/grille/broken/rustic
 	icon_state = "grillerustic-b"
+
+
+/obj/structure/grille/rcd_values(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	switch(passed_mode)
+		if(RCD_WINDOWGRILLE)
+			// A full tile window costs 4 glass sheets.
+			return list(
+				RCD_VALUE_MODE = RCD_WINDOWGRILLE,
+				RCD_VALUE_DELAY = 2 SECONDS,
+				RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 4
+			)
+
+		if(RCD_DECONSTRUCT)
+			return list(
+				RCD_VALUE_MODE = RCD_DECONSTRUCT,
+				RCD_VALUE_DELAY = 2 SECONDS,
+				RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 2
+			)
+	return FALSE
+
+/obj/structure/grille/rcd_act(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	switch(passed_mode)
+		if(RCD_DECONSTRUCT)
+			to_chat(user, span("notice", "You deconstruct \the [src]."))
+			qdel(src)
+			return TRUE
+		if(RCD_WINDOWGRILLE)
+			if(locate(/obj/structure/window) in loc)
+				return FALSE
+			to_chat(user, span("notice", "You construct a window."))
+			var/obj/structure/window/WD = new the_rcd.window_type(loc)
+			WD.anchored = TRUE
+			return TRUE
+	return FALSE
+
diff --git a/code/game/objects/structures/window.dm b/code/game/objects/structures/window.dm
index 5ada656156..5c7adf8f0e 100644
--- a/code/game/objects/structures/window.dm
+++ b/code/game/objects/structures/window.dm
@@ -647,3 +647,20 @@
 			MT.update_icon()
 		return TRUE
 	. = ..()
+
+/obj/structure/window/rcd_values(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	switch(passed_mode)
+		if(RCD_DECONSTRUCT)
+			return list(
+				RCD_VALUE_MODE = RCD_DECONSTRUCT,
+				RCD_VALUE_DELAY = 5 SECONDS,
+				RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 5
+			)
+
+/obj/structure/window/rcd_act(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	switch(passed_mode)
+		if(RCD_DECONSTRUCT)
+			to_chat(user, span("notice", "You deconstruct \the [src]."))
+			qdel(src)
+			return TRUE
+	return FALSE
diff --git a/code/game/turfs/flooring/flooring_premade.dm b/code/game/turfs/flooring/flooring_premade.dm
index d80e5f249e..e3e955ff17 100644
--- a/code/game/turfs/flooring/flooring_premade.dm
+++ b/code/game/turfs/flooring/flooring_premade.dm
@@ -298,7 +298,7 @@
 	initial_flooring = /decl/flooring/tiling/asteroidfloor
 
 /turf/simulated/floor/tiled/asteroid_steel/airless
-	name = "airless plating"
+	name = "plating"
 	oxygen = 0
 	nitrogen = 0
 
@@ -332,25 +332,25 @@
 	temperature = TCMB
 
 /turf/simulated/floor/airless
-	name = "airless plating"
+	name = "plating"
 	oxygen = 0
 	nitrogen = 0
 	temperature = TCMB
 
 /turf/simulated/floor/tiled/airless
-	name = "airless floor"
+	name = "floor"
 	oxygen = 0
 	nitrogen = 0
 	temperature = TCMB
 
 /turf/simulated/floor/bluegrid/airless
-	name = "airless floor"
+	name = "floor"
 	oxygen = 0
 	nitrogen = 0
 	temperature = TCMB
 
 /turf/simulated/floor/greengrid/airless
-	name = "airless floor"
+	name = "floor"
 	oxygen = 0
 	nitrogen = 0
 	temperature = TCMB
@@ -359,7 +359,7 @@
 	oxygen = 0
 
 /turf/simulated/floor/tiled/white/airless
-	name = "airless floor"
+	name = "floor"
 	oxygen = 0
 	nitrogen = 0
 	temperature = TCMB
diff --git a/code/game/turfs/simulated/floor.dm b/code/game/turfs/simulated/floor.dm
index 9f3a8e67b0..b615c0cc42 100644
--- a/code/game/turfs/simulated/floor.dm
+++ b/code/game/turfs/simulated/floor.dm
@@ -91,3 +91,71 @@
 /turf/simulated/floor/levelupdate()
 	for(var/obj/O in src)
 		O.hide(O.hides_under_flooring() && src.flooring)
+
+/turf/simulated/floor/rcd_values(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	switch(passed_mode)
+		if(RCD_FLOORWALL)
+			// A wall costs four sheets to build (two for the grider and two for finishing it).
+			var/cost = RCD_SHEETS_PER_MATTER_UNIT * 4
+			// R-walls cost five sheets, however.
+			if(the_rcd.make_rwalls)
+				cost += RCD_SHEETS_PER_MATTER_UNIT * 1
+			return list(
+				RCD_VALUE_MODE = RCD_FLOORWALL,
+				RCD_VALUE_DELAY = 2 SECONDS,
+				RCD_VALUE_COST = cost
+			)
+		if(RCD_AIRLOCK)
+			// Airlock assemblies cost four sheets. Let's just add another for the electronics/wires/etc.
+			return list(
+				RCD_VALUE_MODE = RCD_AIRLOCK,
+				RCD_VALUE_DELAY = 5 SECONDS,
+				RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 5
+			)
+		if(RCD_WINDOWGRILLE)
+			// One steel sheet for the girder (two rods, which is one sheet).
+			return list(
+				RCD_VALUE_MODE = RCD_WINDOWGRILLE,
+				RCD_VALUE_DELAY = 1 SECOND,
+				RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 1
+			)
+		if(RCD_DECONSTRUCT)
+			// Old RCDs made deconning the floor cost 10 units (IE, three times on full RCD).
+			// Now it's ten sheets worth of units (which is the same capacity-wise, three times on full RCD).
+			return list(
+				RCD_VALUE_MODE = RCD_DECONSTRUCT,
+				RCD_VALUE_DELAY = 5 SECONDS,
+				RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 10
+			)
+	return FALSE
+
+
+/turf/simulated/floor/rcd_act(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	switch(passed_mode)
+		if(RCD_FLOORWALL)
+			to_chat(user, span("notice", "You build a wall."))
+			ChangeTurf(/turf/simulated/wall)
+			var/turf/simulated/wall/T = get_turf(src) // Ref to the wall we just built.
+			// Apparently set_material(...) for walls requires refs to the material singletons and not strings.
+			// This is different from how other material objects with their own set_material(...) do it, but whatever.
+			var/material/M = name_to_material[the_rcd.material_to_use]
+			T.set_material(M, the_rcd.make_rwalls ? M : null, M)
+			T.add_hiddenprint(user)
+			return TRUE
+		if(RCD_AIRLOCK)
+			if(locate(/obj/machinery/door/airlock) in src)
+				return FALSE // No more airlock stacking.
+			to_chat(user, span("notice", "You build an airlock."))
+			new the_rcd.airlock_type(src)
+			return TRUE
+		if(RCD_WINDOWGRILLE)
+			if(locate(/obj/structure/grille) in src)
+				return FALSE
+			to_chat(user, span("notice", "You construct the grille."))
+			var/obj/structure/grille/G = new(src)
+			G.anchored = TRUE
+			return TRUE
+		if(RCD_DECONSTRUCT)
+			to_chat(user, span("notice", "You deconstruct \the [src]."))
+			ChangeTurf(get_base_turf_by_area(src), preserve_outdoors = TRUE)
+			return TRUE
diff --git a/code/game/turfs/simulated/outdoors/outdoors.dm b/code/game/turfs/simulated/outdoors/outdoors.dm
index fc373c0577..968816dc6a 100644
--- a/code/game/turfs/simulated/outdoors/outdoors.dm
+++ b/code/game/turfs/simulated/outdoors/outdoors.dm
@@ -15,6 +15,7 @@ var/list/turf_edge_cache = list()
 	edge_blending_priority = 1
 	outdoors = TRUE					// This variable is used for weather effects.
 	can_dirty = FALSE				// Looks hideous with dirt on it.
+	can_build_into_floor = TRUE
 
 	// When a turf gets demoted or promoted, this list gets adjusted.  The top-most layer is the layer on the bottom of the list, due to how pop() works.
 	var/list/turf_layers = list(/turf/simulated/floor/outdoors/rocks)
diff --git a/code/game/turfs/simulated/walls.dm b/code/game/turfs/simulated/walls.dm
index b64ba73ee3..136b8eeba6 100644
--- a/code/game/turfs/simulated/walls.dm
+++ b/code/game/turfs/simulated/walls.dm
@@ -287,3 +287,27 @@
 				W.burn((temperature/4))
 			for(var/obj/machinery/door/airlock/phoron/D in range(3,src))
 				D.ignite(temperature/4)
+
+/turf/simulated/wall/rcd_values(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	if(material.integrity > 1000) // Don't decon things like elevatorium.
+		return FALSE
+	if(reinf_material && !the_rcd.can_remove_rwalls) // Gotta do it the old fashioned way if your RCD can't.
+		return FALSE
+
+	if(passed_mode == RCD_DECONSTRUCT)
+		var/delay_to_use = material.integrity / 3 // Steel has 150 integrity, so it'll take five seconds to down a regular wall.
+		if(reinf_material)
+			delay_to_use += reinf_material.integrity / 3
+		return list(
+			RCD_VALUE_MODE = RCD_DECONSTRUCT,
+			RCD_VALUE_DELAY = delay_to_use,
+			RCD_VALUE_COST = RCD_SHEETS_PER_MATTER_UNIT * 5
+			)
+	return FALSE
+
+/turf/simulated/wall/rcd_act(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	if(passed_mode == RCD_DECONSTRUCT)
+		to_chat(user, span("notice", "You deconstruct \the [src]."))
+		ChangeTurf(/turf/simulated/floor/airless, preserve_outdoors = TRUE)
+		return TRUE
+	return FALSE
diff --git a/code/game/turfs/space/space.dm b/code/game/turfs/space/space.dm
index ed48013050..d9a41718a8 100644
--- a/code/game/turfs/space/space.dm
+++ b/code/game/turfs/space/space.dm
@@ -6,6 +6,7 @@
 
 	temperature = T20C
 	thermal_conductivity = OPEN_HEAT_TRANSFER_COEFFICIENT
+	can_build_into_floor = TRUE
 	var/keep_sprite = FALSE
 //	heat_capacity = 700000 No.
 
diff --git a/code/game/turfs/space/transit.dm b/code/game/turfs/space/transit.dm
index 79550c3f30..0bfcb4e0f6 100644
--- a/code/game/turfs/space/transit.dm
+++ b/code/game/turfs/space/transit.dm
@@ -1,5 +1,6 @@
 /turf/space/transit
 	keep_sprite = TRUE
+	can_build_into_floor = FALSE
 	var/pushdirection // push things that get caught in the transit tile this direction
 
 //Overwrite because we dont want people building rods in space.
diff --git a/code/game/turfs/turf.dm b/code/game/turfs/turf.dm
index 8d26d11543..0c18524346 100644
--- a/code/game/turfs/turf.dm
+++ b/code/game/turfs/turf.dm
@@ -31,6 +31,7 @@
 	var/list/footstep_sounds = null
 
 	var/block_tele = FALSE      // If true, most forms of teleporting to or from this turf tile will fail.
+	var/can_build_into_floor = FALSE // Used for things like RCDs (and maybe lattices/floor tiles in the future), to see if a floor should replace it.
 
 /turf/New()
 	..()
@@ -321,3 +322,28 @@ var/const/enterloopsanity = 100
 
 /turf/AllowDrop()
 	return TRUE
+
+// This is all the way up here since its the common ancestor for things that need to get replaced with a floor when an RCD is used on them.
+// More specialized turfs like walls should instead override this.
+// The code for applying lattices/floor tiles onto lattices could also utilize something similar in the future.
+/turf/rcd_values(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	if(density || !can_build_into_floor)
+		return FALSE
+	if(passed_mode == RCD_FLOORWALL)
+		var/obj/structure/lattice/L = locate() in src
+		// A lattice costs one rod to make. A sheet can make two rods, meaning a lattice costs half of a sheet.
+		// A sheet also makes four floor tiles, meaning it costs 1/4th of a sheet to place a floor tile on a lattice.
+		// Therefore it should cost 3/4ths of a sheet if a lattice is not present, or 1/4th of a sheet if it does.
+		return list(
+			RCD_VALUE_MODE = RCD_FLOORWALL,
+			RCD_VALUE_DELAY = 0,
+			RCD_VALUE_COST = L ? RCD_SHEETS_PER_MATTER_UNIT * 0.25 : RCD_SHEETS_PER_MATTER_UNIT * 0.75
+			)
+	return FALSE
+
+/turf/rcd_act(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	if(passed_mode == RCD_FLOORWALL)
+		to_chat(user, span("notice", "You build a floor."))
+		ChangeTurf(/turf/simulated/floor/airless, preserve_outdoors = TRUE)
+		return TRUE
+	return FALSE
diff --git a/code/game/turfs/unsimulated.dm b/code/game/turfs/unsimulated.dm
index b4c1999b48..fe6a77cb08 100644
--- a/code/game/turfs/unsimulated.dm
+++ b/code/game/turfs/unsimulated.dm
@@ -4,6 +4,7 @@
 	nitrogen = MOLES_N2STANDARD
 	initialized = TRUE // Don't call init on unsimulated turfs (at least not yet)
 
+<<<<<<< HEAD
 //VOREStation Add
 /turf/unsimulated/fake_space
 	name = "\proper space"
@@ -14,4 +15,12 @@
 /turf/unsimulated/fake_space/New()
 	..()
 	icon_state = "[((x + y) ^ ~(x * y) + z) % 25]"
-//VOREStation Add End
\ No newline at end of file
+//VOREStation Add End
+=======
+// Better nip this just in case.
+/turf/unsimulated/rcd_values(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	return FALSE
+
+/turf/unsimulated/rcd_act(mob/living/user, obj/item/weapon/rcd/the_rcd, passed_mode)
+	return FALSE
+>>>>>>> 3b72438... Makes RCDs Clean Again (#5679)
diff --git a/code/modules/clothing/spacesuits/rig/modules/utility.dm b/code/modules/clothing/spacesuits/rig/modules/utility.dm
index 583f491d5e..058c1118ca 100644
--- a/code/modules/clothing/spacesuits/rig/modules/utility.dm
+++ b/code/modules/clothing/spacesuits/rig/modules/utility.dm
@@ -94,7 +94,7 @@
 	usable = 1
 	engage_string = "Configure RCD"
 
-	device_type = /obj/item/weapon/rcd/mounted
+	device_type = /obj/item/weapon/rcd/electric/mounted/rig
 
 /obj/item/rig_module/device/New()
 	..()
diff --git a/code/modules/mining/mine_turfs.dm b/code/modules/mining/mine_turfs.dm
index 11ac4dcae9..4ff5fd7e17 100644
--- a/code/modules/mining/mine_turfs.dm
+++ b/code/modules/mining/mine_turfs.dm
@@ -62,6 +62,7 @@ var/list/mining_overlay_cache = list()
 	density = 0
 	opacity = 0
 	blocks_air = 0
+	can_build_into_floor = TRUE
 
 /turf/simulated/mineral/floor/ignore_mapgen
 	ignore_mapgen = 1
@@ -72,6 +73,7 @@ var/list/mining_overlay_cache = list()
 	density = 0
 	opacity = 0
 	blocks_air = 0
+	can_build_into_floor = TRUE
 	update_general()
 
 /turf/simulated/mineral/proc/make_wall()
@@ -80,6 +82,7 @@ var/list/mining_overlay_cache = list()
 	density = 1
 	opacity = 1
 	blocks_air = 1
+	can_build_into_floor = FALSE
 	update_general()
 
 /turf/simulated/mineral/proc/update_general()
diff --git a/code/modules/mob/living/silicon/robot/robot_modules/station.dm b/code/modules/mob/living/silicon/robot/robot_modules/station.dm
index 90b51ac415..2416b339ff 100644
--- a/code/modules/mob/living/silicon/robot/robot_modules/station.dm
+++ b/code/modules/mob/living/silicon/robot/robot_modules/station.dm
@@ -423,7 +423,7 @@ var/global/list/robot_modules = list(
 	src.modules += new /obj/item/weapon/inflatable_dispenser/robot(src)
 	src.emag = new /obj/item/weapon/melee/baton/robot/arm(src)
 	src.modules += new /obj/item/device/geiger(src)
-	src.modules += new /obj/item/weapon/rcd/borg(src)
+	src.modules += new /obj/item/weapon/rcd/electric/mounted/borg(src)
 	src.modules += new /obj/item/weapon/pickaxe/plasmacutter(src)
 	src.modules += new /obj/item/weapon/gripper/no_use/loader(src)
 
@@ -890,7 +890,7 @@ var/global/list/robot_modules = list(
 
 /obj/item/weapon/robot_module/drone/construction/New()
 	..()
-	src.modules += new /obj/item/weapon/rcd/borg(src)
+	src.modules += new /obj/item/weapon/rcd/electric/mounted/borg/lesser(src)
 
 /obj/item/weapon/robot_module/drone/respawn_consumable(var/mob/living/silicon/robot/R, var/amount)
 	var/obj/item/device/lightreplacer/LR = locate() in src.modules
diff --git a/code/modules/mob/living/silicon/robot/robot_modules/syndicate.dm b/code/modules/mob/living/silicon/robot/robot_modules/syndicate.dm
index 3c8e981c3b..72caaa2d73 100644
--- a/code/modules/mob/living/silicon/robot/robot_modules/syndicate.dm
+++ b/code/modules/mob/living/silicon/robot/robot_modules/syndicate.dm
@@ -83,7 +83,7 @@
 	src.modules += new /obj/item/weapon/tool/wirecutters/cyborg(src)
 	src.modules += new /obj/item/device/multitool/ai_detector(src)
 	src.modules += new /obj/item/weapon/pickaxe/plasmacutter(src)
-	src.modules += new /obj/item/weapon/rcd/borg/lesser(src) // Can't eat rwalls to prevent AI core cheese.
+	src.modules += new /obj/item/weapon/rcd/electric/mounted/borg/lesser(src) // Can't eat rwalls to prevent AI core cheese.
 	src.modules += new /obj/item/weapon/melee/energy/sword/ionic_rapier(src)
 
 	// FBP repair.
diff --git a/code/modules/multiz/turf.dm b/code/modules/multiz/turf.dm
index ae44c58412..cbf7623267 100644
--- a/code/modules/multiz/turf.dm
+++ b/code/modules/multiz/turf.dm
@@ -26,6 +26,7 @@
 	plane = OPENSPACE_PLANE_START
 	pathweight = 100000 //Seriously, don't try and path over this one numbnuts
 	dynamic_lighting = 0 // Someday lets do proper lighting z-transfer.  Until then we are leaving this off so it looks nicer.
+	can_build_into_floor = TRUE
 
 	var/turf/below
 
diff --git a/html/changelogs/Neerti-RCDs.yml b/html/changelogs/Neerti-RCDs.yml
new file mode 100644
index 0000000000..04c5778974
--- /dev/null
+++ b/html/changelogs/Neerti-RCDs.yml
@@ -0,0 +1,37 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes: 
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#################################
+
+# Your name.  
+author: Neerti
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes: 
+  - rscadd: "RCDs can now build grilles and windows, with a new mode. They can also finish walls when used on girders on floor/wall mode."
+  - rscadd: "Adds various new RCDs that are not obtainable at the moment."
diff --git a/icons/obj/items.dmi b/icons/obj/items.dmi
index a8e41841c3..d33437164e 100644
Binary files a/icons/obj/items.dmi and b/icons/obj/items.dmi differ
diff --git a/icons/obj/tools.dmi b/icons/obj/tools.dmi
index 9cbb46748a..b25a6cbc56 100644
Binary files a/icons/obj/tools.dmi and b/icons/obj/tools.dmi differ