diff --git a/code/game/objects/items/stacks/bscrystal.dm b/code/game/objects/items/stacks/bscrystal.dm
index 1563781267..16737f7057 100644
--- a/code/game/objects/items/stacks/bscrystal.dm
+++ b/code/game/objects/items/stacks/bscrystal.dm
@@ -60,6 +60,7 @@
 	origin_tech = "bluespace=6;materials=3"
 	materials = list(MAT_BLUESPACE=MINERAL_MATERIAL_AMOUNT)
 	attack_verb = list("bluespace polybashed", "bluespace polybattered", "bluespace polybludgeoned", "bluespace polythrashed", "bluespace polysmashed")
+	novariants = TRUE
 	var/crystal_type = /obj/item/weapon/ore/bluespace_crystal/refined
 
 /obj/item/stack/sheet/bluespace_crystal/attack_self(mob/user)// to prevent the construction menu from ever happening
diff --git a/code/game/objects/items/stacks/medical.dm b/code/game/objects/items/stacks/medical.dm
index 018d5573a3..f1367f814e 100644
--- a/code/game/objects/items/stacks/medical.dm
+++ b/code/game/objects/items/stacks/medical.dm
@@ -5,11 +5,13 @@
 	amount = 6
 	max_amount = 6
 	w_class = WEIGHT_CLASS_TINY
+	full_w_class = WEIGHT_CLASS_TINY
 	throw_speed = 3
 	throw_range = 7
 	resistance_flags = FLAMMABLE
 	obj_integrity = 40
 	max_integrity = 40
+	novariants = FALSE
 	var/heal_brute = 0
 	var/heal_burn = 0
 	var/stop_bleeding = 0
diff --git a/code/game/objects/items/stacks/rods.dm b/code/game/objects/items/stacks/rods.dm
index 1a8257fd79..9cdb097cdc 100644
--- a/code/game/objects/items/stacks/rods.dm
+++ b/code/game/objects/items/stacks/rods.dm
@@ -20,6 +20,7 @@ GLOBAL_LIST_INIT(rod_recipes, list ( \
 	max_amount = 50
 	attack_verb = list("hit", "bludgeoned", "whacked")
 	hitsound = 'sound/weapons/grenadelaunch.ogg'
+	novariants = TRUE
 
 /obj/item/stack/rods/Initialize(mapload, new_amount, merge = TRUE)
 	..()
diff --git a/code/game/objects/items/stacks/sheets/leather.dm b/code/game/objects/items/stacks/sheets/leather.dm
index 9c14a4376a..f8efd500e3 100644
--- a/code/game/objects/items/stacks/sheets/leather.dm
+++ b/code/game/objects/items/stacks/sheets/leather.dm
@@ -2,12 +2,14 @@
 	name = "hide"
 	desc = "Something went wrong."
 	origin_tech = "biotech=3"
+	novariants = TRUE
 
 /obj/item/stack/sheet/animalhide/human
 	name = "human skin"
 	desc = "The by-product of human farming."
 	singular_name = "human skin piece"
 	icon_state = "sheet-hide"
+	novariants = FALSE
 
 GLOBAL_LIST_INIT(human_recipes, list( \
 	new/datum/stack_recipe("bloated human costume", /obj/item/clothing/suit/hooded/bloated_human, 5, on_floor = 1), \
@@ -22,6 +24,7 @@ GLOBAL_LIST_INIT(human_recipes, list( \
 	desc = "A piece of skin."
 	singular_name = "skin piece"
 	icon_state = "sheet-hide"
+	novariants = FALSE
 
 /obj/item/stack/sheet/animalhide/corgi
 	name = "corgi hide"
@@ -87,6 +90,7 @@ GLOBAL_LIST_INIT(xeno_recipes, list ( \
 	icon = 'icons/mob/alien.dmi'
 	icon_state = "chitin"
 	origin_tech = null
+	novariants = TRUE
 
 /obj/item/xenos_claw
 	name = "alien claw"
@@ -153,6 +157,7 @@ GLOBAL_LIST_INIT(leather_recipes, list ( \
 	singular_name = "watcher sinew"
 	icon_state = "sinew"
 	origin_tech = "biotech=4"
+	novariants = TRUE
 
 
 GLOBAL_LIST_INIT(sinew_recipes, list ( \
@@ -166,23 +171,27 @@ GLOBAL_LIST_INIT(sinew_recipes, list ( \
 		/*
  * Plates
  		*/
-
 /obj/item/stack/sheet/animalhide/goliath_hide
 	name = "goliath hide plates"
 	desc = "Pieces of a goliath's rocky hide, these might be able to make your suit a bit more durable to attack from the local fauna."
 	icon = 'icons/obj/mining.dmi'
 	icon_state = "goliath_hide"
 	singular_name = "hide plate"
+	max_amount = 6
+	novariants = FALSE
 	flags = NOBLUDGEON
 	w_class = WEIGHT_CLASS_NORMAL
 	layer = MOB_LAYER
 
+
 /obj/item/stack/sheet/animalhide/ashdrake
 	name = "ash drake hide"
 	desc = "The strong, scaled hide of an ash drake."
 	icon = 'icons/obj/mining.dmi'
 	icon_state = "dragon_hide"
 	singular_name = "drake plate"
+	max_amount = 10
+	novariants = FALSE
 	flags = NOBLUDGEON
 	w_class = WEIGHT_CLASS_NORMAL
 	layer = MOB_LAYER
diff --git a/code/game/objects/items/stacks/sheets/mineral.dm b/code/game/objects/items/stacks/sheets/mineral.dm
index 9514be618c..ea1f8db498 100644
--- a/code/game/objects/items/stacks/sheets/mineral.dm
+++ b/code/game/objects/items/stacks/sheets/mineral.dm
@@ -68,6 +68,7 @@ GLOBAL_LIST_INIT(sandstone_recipes, list ( \
 	singular_name = "sandbag"
 	layer = LOW_ITEM_LAYER
 	origin_tech = "materials=2"
+	novariants = TRUE
 
 GLOBAL_LIST_INIT(sandbag_recipes, list ( \
 	new/datum/stack_recipe("sandbags", /obj/structure/barricade/sandbags, 1, time = 25, one_per_turf = 1, on_floor = 1), \
@@ -104,6 +105,7 @@ GLOBAL_LIST_INIT(sandbag_recipes, list ( \
 	origin_tech = "materials=6"
 	sheettype = "diamond"
 	materials = list(MAT_DIAMOND=MINERAL_MATERIAL_AMOUNT)
+	novariants = TRUE
 
 GLOBAL_LIST_INIT(diamond_recipes, list ( \
 	new/datum/stack_recipe("diamond door", /obj/structure/mineral_door/transparent/diamond, 10, one_per_turf = 1, on_floor = 1), \
@@ -127,6 +129,7 @@ GLOBAL_LIST_INIT(diamond_recipes, list ( \
 	origin_tech = "materials=5"
 	sheettype = "uranium"
 	materials = list(MAT_URANIUM=MINERAL_MATERIAL_AMOUNT)
+	novariants = TRUE
 
 GLOBAL_LIST_INIT(uranium_recipes, list ( \
 	new/datum/stack_recipe("uranium door", /obj/structure/mineral_door/uranium, 10, one_per_turf = 1, on_floor = 1), \
@@ -237,6 +240,7 @@ GLOBAL_LIST_INIT(silver_recipes, list ( \
 	origin_tech = "materials=4"
 	sheettype = "clown"
 	materials = list(MAT_BANANIUM=MINERAL_MATERIAL_AMOUNT)
+	novariants = TRUE
 
 GLOBAL_LIST_INIT(clown_recipes, list ( \
 	new/datum/stack_recipe("bananium tile", /obj/item/stack/tile/mineral/bananium, 1, 4, 20), \
@@ -355,6 +359,7 @@ GLOBAL_LIST_INIT(adamantine_recipes, list(
 	icon_state = "sheet-mythril"
 	singular_name = "mythril sheet"
 	origin_tech = "materials=4"
+	novariants = TRUE
 
 /*
  * Alien Alloy
diff --git a/code/game/objects/items/stacks/sheets/sheet_types.dm b/code/game/objects/items/stacks/sheets/sheet_types.dm
index 3b9f5b4509..61abe97859 100644
--- a/code/game/objects/items/stacks/sheets/sheet_types.dm
+++ b/code/game/objects/items/stacks/sheets/sheet_types.dm
@@ -162,6 +162,7 @@ GLOBAL_LIST_INIT(wood_recipes, list ( \
 	armor = list(melee = 0, bullet = 0, laser = 0, energy = 0, bomb = 0, bio = 0, rad = 0, fire = 50, acid = 0)
 	resistance_flags = FLAMMABLE
 	merge_type = /obj/item/stack/sheet/mineral/wood
+	novariants = TRUE
 
 /obj/item/stack/sheet/mineral/wood/Initialize(mapload, new_amount, merge = TRUE)
 	recipes = GLOB.wood_recipes
@@ -239,6 +240,7 @@ GLOBAL_LIST_INIT(cardboard_recipes, list ( \
 	origin_tech = "materials=1"
 	resistance_flags = FLAMMABLE
 	merge_type = /obj/item/stack/sheet/cardboard
+	novariants = TRUE
 
 /obj/item/stack/sheet/cardboard/Initialize(mapload, new_amount, merge = TRUE)
 	recipes = GLOB.cardboard_recipes
@@ -268,6 +270,7 @@ GLOBAL_LIST_INIT(runed_metal_recipes, list ( \
 	icon = 'icons/obj/items.dmi'
 	sheettype = "runed"
 	merge_type = /obj/item/stack/sheet/runed_metal
+	novariants = TRUE
 
 /obj/item/stack/sheet/runed_metal/ratvar_act()
 	new /obj/item/stack/tile/brass(loc, amount)
@@ -322,6 +325,7 @@ GLOBAL_LIST_INIT(brass_recipes, list ( \
 	throw_speed = 1
 	throw_range = 3
 	turf_type = /turf/open/floor/clockwork
+	novariants = FALSE
 
 /obj/item/stack/tile/brass/narsie_act()
 	new /obj/item/stack/sheet/runed_metal(loc, amount)
@@ -339,6 +343,7 @@ GLOBAL_LIST_INIT(brass_recipes, list ( \
 	singular_name = "lesser gem"
 	icon_state = "sheet-lessergem"
 	origin_tech = "materials=4"
+	novariants = TRUE
 
 
 /obj/item/stack/sheet/greatergem
@@ -347,6 +352,7 @@ GLOBAL_LIST_INIT(brass_recipes, list ( \
 	singular_name = "greater gem"
 	icon_state = "sheet-greatergem"
 	origin_tech = "materials=7"
+	novariants = TRUE
 
 	/*
  * Bones
@@ -359,6 +365,7 @@ GLOBAL_LIST_INIT(brass_recipes, list ( \
 	desc = "Someone's been drinking their milk."
 	force = 7
 	throwforce = 5
+	max_amount = 12
 	w_class = WEIGHT_CLASS_NORMAL
 	throw_speed = 1
 	throw_range = 3
diff --git a/code/game/objects/items/stacks/sheets/sheets.dm b/code/game/objects/items/stacks/sheets/sheets.dm
index 0788ad6eba..c3fc626233 100644
--- a/code/game/objects/items/stacks/sheets/sheets.dm
+++ b/code/game/objects/items/stacks/sheets/sheets.dm
@@ -1,11 +1,12 @@
 /obj/item/stack/sheet
 	name = "sheet"
-	w_class = WEIGHT_CLASS_NORMAL
+	full_w_class = WEIGHT_CLASS_NORMAL
 	force = 5
 	throwforce = 5
 	max_amount = 50
 	throw_speed = 1
 	throw_range = 3
 	attack_verb = list("bashed", "battered", "bludgeoned", "thrashed", "smashed")
+	novariants = FALSE
 	var/perunit = MINERAL_MATERIAL_AMOUNT
 	var/sheettype = null //this is used for girders in the creation of walls/false walls
\ No newline at end of file
diff --git a/code/game/objects/items/stacks/stack.dm b/code/game/objects/items/stacks/stack.dm
index e5f9026257..64af889af6 100644
--- a/code/game/objects/items/stacks/stack.dm
+++ b/code/game/objects/items/stacks/stack.dm
@@ -18,6 +18,8 @@
 	var/datum/robot_energy_storage/source
 	var/cost = 1 // How much energy from storage it costs
 	var/merge_type = null // This path and its children should merge with this stack, defaults to src.type
+	var/full_w_class = WEIGHT_CLASS_NORMAL //The weight class the stack should have at amount > 2/3rds max_amount
+	var/novariants = TRUE //Determines whether the item should update it's sprites based on amount.
 
 /obj/item/stack/Initialize(mapload, new_amount=null , merge = TRUE)
 	..()
@@ -29,6 +31,28 @@
 		for(var/obj/item/stack/S in loc)
 			if(S.merge_type == merge_type)
 				merge(S)
+	update_weight()
+	update_icon()
+
+/obj/item/stack/proc/update_weight()
+	if(amount <= (max_amount * (1/3)))
+		w_class = Clamp(full_w_class-2, WEIGHT_CLASS_TINY, full_w_class)
+	else if (amount <= (max_amount * (2/3)))
+		w_class = Clamp(full_w_class-1, WEIGHT_CLASS_TINY, full_w_class)
+	else
+		w_class = full_w_class
+
+/obj/item/stack/update_icon()
+	if(novariants)
+		return ..()
+	if(amount <= (max_amount * (1/3)))
+		icon_state = initial(icon_state)
+	else if (amount <= (max_amount * (2/3)))
+		icon_state = "[initial(icon_state)]_2"
+	else
+		icon_state = "[initial(icon_state)]_3"
+	..()
+
 
 /obj/item/stack/Destroy()
 	if (usr && usr.machine==src)
@@ -188,6 +212,7 @@
 	amount -= used
 	zero_amount()
 	update_icon()
+	update_weight()
 	return 1
 
 /obj/item/stack/proc/zero_amount()
@@ -204,6 +229,7 @@
 	else
 		src.amount += amount
 	update_icon()
+	update_weight()
 
 /obj/item/stack/proc/merge(obj/item/stack/S) //Merge src into S, as much as possible
 	if(QDELETED(S) || QDELETED(src) || S == src) //amusingly this can cause a stack to consume itself, let's not allow that.
diff --git a/code/game/objects/items/stacks/tiles/tile_types.dm b/code/game/objects/items/stacks/tiles/tile_types.dm
index ef123030f5..8b97bda160 100644
--- a/code/game/objects/items/stacks/tiles/tile_types.dm
+++ b/code/game/objects/items/stacks/tiles/tile_types.dm
@@ -12,6 +12,7 @@
 	origin_tech = "materials=1"
 	var/turf_type = null
 	var/mineralType = null
+	novariants = TRUE
 
 /obj/item/stack/tile/Initialize(mapload, amount)
 	. = ..()
diff --git a/code/modules/mining/equipment/marker_beacons.dm b/code/modules/mining/equipment/marker_beacons.dm
index 2770897c34..526ab964a6 100644
--- a/code/modules/mining/equipment/marker_beacons.dm
+++ b/code/modules/mining/equipment/marker_beacons.dm
@@ -22,6 +22,7 @@ GLOBAL_LIST_INIT(marker_beacon_colors, list(
 	icon_state = "marker"
 	merge_type = /obj/item/stack/marker_beacon
 	max_amount = 100
+	novariants = TRUE
 	var/picked_color = "random"
 
 /obj/item/stack/marker_beacon/ten //miners start with 10 of these
diff --git a/icons/obj/mining.dmi b/icons/obj/mining.dmi
index a5fe40431e..3de64f610a 100644
Binary files a/icons/obj/mining.dmi and b/icons/obj/mining.dmi differ