diff --git a/code/game/objects/items/stacks/stack.dm b/code/game/objects/items/stacks/stack.dm
index b1afc7bd18..e67efb0c8a 100644
--- a/code/game/objects/items/stacks/stack.dm
+++ b/code/game/objects/items/stacks/stack.dm
@@ -227,26 +227,36 @@
 		else
 			to_chat(usr, "<span class='warning'>You haven't got enough [src] to build \the [R.title]!</span>")
 		return FALSE
-	if(R.window_checks && !valid_window_location(usr.loc, usr.dir))
+	var/turf/T = get_turf(usr)
+	if(R.window_checks && !valid_window_location(T, usr.dir))
 		to_chat(usr, "<span class='warning'>The [R.title] won't fit here!</span>")
 		return FALSE
-	if(R.one_per_turf && (locate(R.result_type) in usr.loc))
+	if(R.one_per_turf && (locate(R.result_type) in T))
 		to_chat(usr, "<span class='warning'>There is another [R.title] here!</span>")
 		return FALSE
-	if(R.on_floor && !isfloorturf(usr.loc))
-		to_chat(usr, "<span class='warning'>\The [R.title] must be constructed on the floor!</span>")
-		return FALSE
+	if(R.on_floor)
+		if(!isfloorturf(T))
+			to_chat(usr, "<span class='warning'>\The [R.title] must be constructed on the floor!</span>")
+			return FALSE
+		for(var/obj/AM in T)
+			if(istype(AM,/obj/structure/grille))
+				continue
+			if(istype(AM,/obj/structure/table))
+				continue
+			if(AM.density)
+				to_chat(usr, "<span class='warning'>Theres a [AM.name] here. You cant make a [R.title] here!</span>")
+				return FALSE
 	if(R.placement_checks)
 		switch(R.placement_checks)
 			if(STACK_CHECK_CARDINALS)
 				var/turf/step
 				for(var/direction in GLOB.cardinals)
-					step = get_step(usr, direction)
+					step = get_step(T, direction)
 					if(locate(R.result_type) in step)
 						to_chat(usr, "<span class='warning'>\The [R.title] must not be built directly adjacent to another!</span>")
 						return FALSE
 			if(STACK_CHECK_ADJACENT)
-				if(locate(R.result_type) in range(1, usr))
+				if(locate(R.result_type) in range(1, T))
 					to_chat(usr, "<span class='warning'>\The [R.title] must be constructed at least one tile away from others of its type!</span>")
 					return FALSE
 	return TRUE
@@ -395,7 +405,9 @@
 	var/window_checks = FALSE
 	var/placement_checks = FALSE
 
-/datum/stack_recipe/New(title, result_type, req_amount = 1, res_amount = 1, max_res_amount = 1, time = 0, one_per_turf = FALSE, on_floor = FALSE, window_checks = FALSE, placement_checks = FALSE)
+/datum/stack_recipe/New(title, result_type, req_amount = 1, res_amount = 1, max_res_amount = 1,time = 0, one_per_turf = FALSE, on_floor = FALSE, window_checks = FALSE, placement_checks = FALSE )
+
+
 	src.title = title
 	src.result_type = result_type
 	src.req_amount = req_amount
diff --git a/code/modules/power/singularity/collector.dm b/code/modules/power/singularity/collector.dm
index f68b2c612c..15ae1748f0 100644
--- a/code/modules/power/singularity/collector.dm
+++ b/code/modules/power/singularity/collector.dm
@@ -113,7 +113,7 @@
 		if(loaded_tank)
 			to_chat(user, "<span class='warning'>There's already a plasma tank loaded!</span>")
 			return TRUE
-		if(panel_open) 
+		if(panel_open)
 			to_chat(user, "<span class='warning'>Close the maintenance panel first!</span>")
 			return TRUE
 		if(!user.transferItemToLoc(W, src))
@@ -134,7 +134,7 @@
 		return ..()
 
 /obj/machinery/power/rad_collector/wrench_act(mob/living/user, obj/item/I)
-	default_unfasten_wrench(user, I, 0)
+	default_unfasten_wrench(user, I)
 	return TRUE
 
 /obj/machinery/power/rad_collector/screwdriver_act(mob/living/user, obj/item/I)
diff --git a/code/modules/power/singularity/emitter.dm b/code/modules/power/singularity/emitter.dm
index da2fc9dc94..3ca4c70199 100644
--- a/code/modules/power/singularity/emitter.dm
+++ b/code/modules/power/singularity/emitter.dm
@@ -229,7 +229,7 @@
 			state = EM_UNSECURED
 
 /obj/machinery/power/emitter/wrench_act(mob/living/user, obj/item/I)
-	default_unfasten_wrench(user, I, 0)
+	default_unfasten_wrench(user, I)
 	return TRUE
 
 /obj/machinery/power/emitter/welder_act(mob/living/user, obj/item/I)
diff --git a/code/modules/power/singularity/field_generator.dm b/code/modules/power/singularity/field_generator.dm
index 5c93d3a7e8..3ea81568a7 100644
--- a/code/modules/power/singularity/field_generator.dm
+++ b/code/modules/power/singularity/field_generator.dm
@@ -106,7 +106,7 @@ field_generator power level display
 			state = FG_UNSECURED
 
 /obj/machinery/field/generator/wrench_act(mob/living/user, obj/item/I)
-	default_unfasten_wrench(user, I, 0)
+	default_unfasten_wrench(user, I)
 	return TRUE
 
 /obj/machinery/field/generator/welder_act(mob/living/user, obj/item/I)