Use material defines more

code/modules/assembly/assembly.dm

@@ -4,7 +4,7 @@
 	icon = 'icons/obj/assemblies/new_assemblies.dmi'
 	icon_state = ""
 	w_class = ITEMSIZE_SMALL
-	matter = list(DEFAULT_WALL_MATERIAL = 100)
+	matter = list(MAT_STEEL = 100)
 	throwforce = 2
 	throw_speed = 3
 	throw_range = 10

code/modules/assembly/igniter.dm

@@ -3,7 +3,7 @@
 	desc = "A small electronic device able to ignite combustable substances."
 	icon_state = "igniter"
 	origin_tech = list(TECH_MAGNET = 1)
-	matter = list(DEFAULT_WALL_MATERIAL = 500, MAT_GLASS = 50)
+	matter = list(MAT_STEEL = 500, MAT_GLASS = 50)
 
 	secured = 1
 	wires = WIRE_RECEIVE

code/modules/assembly/infrared.dm

@@ -5,7 +5,7 @@
 	desc = "Emits a visible or invisible beam and is triggered when the beam is interrupted."
 	icon_state = "infrared"
 	origin_tech = list(TECH_MAGNET = 2)
-	matter = list(DEFAULT_WALL_MATERIAL = 1000, MAT_GLASS = 500)
+	matter = list(MAT_STEEL = 1000, MAT_GLASS = 500)
 
 	wires = WIRE_PULSE
 

code/modules/assembly/mousetrap.dm

@@ -3,7 +3,7 @@
 	desc = "A handy little spring-loaded trap for catching pesty rodents."
 	icon_state = "mousetrap"
 	origin_tech = list(TECH_COMBAT = 1)
-	matter = list(DEFAULT_WALL_MATERIAL = 100)
+	matter = list(MAT_STEEL = 100)
 	var/armed = 0
 
 

code/modules/assembly/proximity.dm

@@ -3,7 +3,7 @@
 	desc = "Used for scanning and alerting when someone enters a certain proximity."
 	icon_state = "prox"
 	origin_tech = list(TECH_MAGNET = 1)
-	matter = list(DEFAULT_WALL_MATERIAL = 800, MAT_GLASS = 200)
+	matter = list(MAT_STEEL = 800, MAT_GLASS = 200)
 	wires = WIRE_PULSE
 
 	secured = 0

code/modules/assembly/signaler.dm

@@ -4,7 +4,7 @@
 	icon_state = "signaller"
 	item_state = "signaler"
 	origin_tech = list(TECH_MAGNET = 1)
-	matter = list(DEFAULT_WALL_MATERIAL = 1000, MAT_GLASS = 200)
+	matter = list(MAT_STEEL = 1000, MAT_GLASS = 200)
 	wires = WIRE_RECEIVE | WIRE_PULSE | WIRE_RADIO_PULSE | WIRE_RADIO_RECEIVE
 
 	secured = TRUE

code/modules/assembly/timer.dm

@@ -3,7 +3,7 @@
 	desc = "Used to time things. Works well with contraptions which has to count down. Tick tock."
 	icon_state = "timer"
 	origin_tech = list(TECH_MAGNET = 1)
-	matter = list(DEFAULT_WALL_MATERIAL = 500, MAT_GLASS = 50)
+	matter = list(MAT_STEEL = 500, MAT_GLASS = 50)
 
 	wires = WIRE_PULSE
 

code/modules/assembly/voice.dm

@@ -3,7 +3,7 @@
 	desc = "A small electronic device able to record a voice sample, and send a signal when that sample is repeated."
 	icon_state = "voice"
 	origin_tech = list(TECH_MAGNET = 1)
-	matter = list(DEFAULT_WALL_MATERIAL = 500, MAT_GLASS = 50)
+	matter = list(MAT_STEEL = 500, MAT_GLASS = 50)
 	var/listening = 0
 	var/recorded	//the activation message