Pass I

code/game/objects/items/ashtray.dm

@@ -81,8 +81,7 @@
 	icon_broken  = "ashtray_bork_bl"
 	max_butts = 14
 	health = 24.0
-	g_amt = 30
-	m_amt = 30
+	materials = list(MAT_METAL=30, MAT_GLASS=30)
 	empty_desc = "Cheap plastic ashtray."
 	throwforce = 3.0
 	die()
@@ -102,7 +101,7 @@
 	icon_broken  = "ashtray_bork_br"
 	max_butts = 10
 	health = 72.0
-	m_amt = 80
+	materials = list(MAT_METAL=80)
 	empty_desc = "Massive bronze ashtray."
 	throwforce = 10.0
 
@@ -123,7 +122,7 @@
 	icon_broken  = "ashtray_bork_gl"
 	max_butts = 12
 	health = 12.0
-	g_amt = 60
+	materials = list(MAT_GLASS=60)
 	empty_desc = "Glass ashtray. Looks fragile."
 	throwforce = 6.0
 

code/game/objects/items/devices/debugger.dm

@@ -16,8 +16,7 @@
 	throw_range = 15
 	throw_speed = 3
 	desc = "You can use this on airlocks or APCs to try to hack them without cutting wires."
-	m_amt = 50
-	g_amt = 20
+	materials = list(MAT_METAL=50, MAT_GLASS=20)
 	origin_tech = "magnets=1;engineering=1"
 	var/obj/machinery/telecomms/buffer // simple machine buffer for device linkage
 

code/game/objects/items/devices/flashlight.dm

@@ -7,8 +7,7 @@
 	w_class = 2
 	flags = CONDUCT
 	slot_flags = SLOT_BELT
-	m_amt = 50
-	g_amt = 20
+	materials = list(MAT_METAL=50, MAT_GLASS=20)
 	action_button_name = "Flashlight"
 	var/on = 0
 	var/brightness_on = 4 //luminosity when on
@@ -119,8 +118,7 @@
 	brightness_on = 5
 	w_class = 4
 	flags = CONDUCT
-	m_amt = 0
-	g_amt = 0
+	materials = list()
 	on = 1
 
 
@@ -214,6 +212,7 @@ obj/item/device/flashlight/lamp/bananalamp
 	w_class = 1
 	brightness_on = 6
 	light_color = "#FFBF00"
+	materials = list()
 	on = 1 //Bio-luminesence has one setting, on.
 
 /obj/item/device/flashlight/slime/New()

code/game/objects/items/devices/laserpointer.dm

@@ -7,8 +7,7 @@
 	var/pointer_icon_state
 	flags = CONDUCT
 	slot_flags = SLOT_BELT
-	m_amt = 500
-	g_amt = 500
+	materials = list(MAT_METAL=500, MAT_GLASS=500)
 	w_class = 2 //Increased to 2, because diodes are w_class 2. Conservation of matter.
 	origin_tech = "combat=1"
 	origin_tech = "magnets=2"

code/game/objects/items/devices/multitool.dm

@@ -15,8 +15,7 @@
 	throw_range = 15
 	throw_speed = 3
 	desc = "You can use this on airlocks or APCs to try to hack them without cutting wires."
-	m_amt = 50
-	g_amt = 20
+	materials = list(MAT_METAL=50, MAT_GLASS=20)
 	origin_tech = "magnets=1;engineering=1"
 	var/obj/machinery/buffer // simple machine buffer for device linkage
 

code/game/objects/items/devices/powersink.dm

@@ -10,8 +10,7 @@
 	throwforce = 5
 	throw_speed = 1
 	throw_range = 2
-	m_amt = 750
-	w_amt = 750
+	materials = list(MAT_METAL=750)
 	origin_tech = "powerstorage=3;syndicate=5"
 	var/drain_rate = 1500000		// amount of power to drain per tick
 	var/apc_drain_rate = 5000 		// Max. amount drained from single APC. In Watts.

code/game/objects/items/devices/radio/electropack.dm

@@ -7,8 +7,7 @@
 	flags = CONDUCT
 	slot_flags = SLOT_BACK
 	w_class = 5.0
-	g_amt = 2500
-	m_amt = 10000
+	materials = list(MAT_METAL=10000, MAT_GLASS=2500)
 	var/code = 2
 
 /obj/item/device/radio/electropack/attack_hand(mob/user as mob)

code/game/objects/items/devices/radio/headset.dm

@@ -4,7 +4,7 @@
 	var/radio_desc = ""
 	icon_state = "headset"
 	item_state = "headset"
-	m_amt = 75
+	materials = list(MAT_METAL=75)
 	subspace_transmission = 1
 	canhear_range = 0 // can't hear headsets from very far away
 

code/game/objects/items/devices/radio/intercom.dm

@@ -39,7 +39,7 @@
 	add_fingerprint(user)
 	spawn(0)
 		attack_self(user)
-		
+
 /obj/item/device/radio/intercom/attack_ghost(mob/user as mob)
 	spawn(0)
 		attack_self(user)
@@ -160,5 +160,4 @@
 	icon_state = "door_electronics"
 	desc = "Looks like a circuit. Probably is."
 	w_class = 2.0
-	m_amt = 50
-	g_amt = 50
+	materials = list(MAT_METAL=50, MAT_GLASS=50)

code/game/objects/items/devices/radio/radio.dm

@@ -26,8 +26,8 @@
 	throw_range = 9
 	w_class = 2
 
-	m_amt = 75
-	g_amt = 25
+	materials = list(MAT_METAL=75)
+
 	var/const/FREQ_LISTENING = 1
 	var/prison_radio = 0
 	var/atom/follow_target // Custom follow target for autosay-using bots

code/game/objects/items/devices/scanners.dm

@@ -16,7 +16,7 @@ REAGENT SCANNER
 	slot_flags = SLOT_BELT
 	w_class = 2
 	item_state = "electronic"
-	m_amt = 150
+	materials = list(MAT_METAL=150)
 	origin_tech = "magnets=1;engineering=1"
 	var/scan_range = 1
 	var/pulse_duration = 10
@@ -121,7 +121,7 @@ REAGENT SCANNER
 	w_class = 1.0
 	throw_speed = 5
 	throw_range = 10
-	m_amt = 200
+	materials = list(MAT_METAL=200)
 	origin_tech = "magnets=1;biotech=1"
 	var/upgraded = 0
 	var/mode = 1;
@@ -296,8 +296,7 @@ REAGENT SCANNER
 	throwforce = 0
 	throw_speed = 3
 	throw_range = 7
-	m_amt = 30
-	g_amt = 20
+	materials = list(MAT_METAL=30, MAT_GLASS=20)
 	origin_tech = "magnets=1;engineering=1"
 
 /obj/item/device/analyzer/attack_self(mob/user as mob)
@@ -363,8 +362,7 @@ REAGENT SCANNER
 	throwforce = 5
 	throw_speed = 4
 	throw_range = 20
-	m_amt = 30
-	g_amt = 20
+	materials = list(MAT_METAL=30, MAT_GLASS=20)
 	origin_tech = "magnets=2;biotech=2"
 	var/details = 0
 	var/recent_fail = 0
@@ -436,8 +434,7 @@ REAGENT SCANNER
 	throwforce = 5
 	throw_speed = 4
 	throw_range = 20
-	m_amt = 30
-	g_amt = 20
+	materials = list(MAT_METAL=30, MAT_GLASS=20)
 	origin_tech = "magnets=2;biotech=2"
 	var/details = 0
 	var/recent_fail = 0
@@ -493,8 +490,7 @@ REAGENT SCANNER
 	throwforce = 0
 	throw_speed = 3
 	throw_range = 7
-	m_amt = 30
-	g_amt = 20
+	materials = list(MAT_METAL=30, MAT_GLASS=20)
 
 /obj/item/device/slime_scanner/attack(mob/living/M as mob, mob/living/user as mob)
 	if (!isslime(M))

code/game/objects/items/devices/taperecorder.dm

@@ -5,8 +5,7 @@
 	item_state = "analyzer"
 	w_class = 2
 	slot_flags = SLOT_BELT
-	m_amt = 60
-	g_amt = 30
+	materials = list(MAT_METAL=60, MAT_GLASS=30)
 	force = 2
 	throwforce = 0
 	var/recording = 0
@@ -262,8 +261,7 @@
 	icon_state = "tape_white"
 	item_state = "analyzer"
 	w_class = 1
-	m_amt = 20
-	g_amt = 5
+	materials = list(MAT_METAL=20, MAT_GLASS=5)
 	force = 1
 	throwforce = 0
 	var/max_capacity = 600

code/game/objects/items/devices/traitordevices.dm

@@ -85,7 +85,7 @@ effective or pretty fucking useless.
 	w_class = 1.0
 	throw_speed = 5
 	throw_range = 10
-	m_amt = 200
+	materials = list(MAT_METAL=400)
 	origin_tech = "magnets=3;biotech=5;syndicate=3"
 	var/intensity = 5 // how much damage the radiation does
 	var/wavelength = 10 // time it takes for the radiation to kick in, in seconds

code/game/objects/items/mountable_frames/air_alarm.dm

@@ -8,7 +8,7 @@ Code shamelessly copied from apc_frame
 	desc = "Used for building Air Alarms"
 	icon = 'icons/obj/monitors.dmi'
 	icon_state = "alarm_bitem"
-	m_amt = 2000
+	materials = list(MAT_METAL=2000)
 	mount_reqs = list("simfloor", "nospace")
 
 /obj/item/mounted/frame/alarm_frame/do_build(turf/on_wall, mob/user)

code/game/objects/items/mountable_frames/newscaster_frame.dm

@@ -3,8 +3,7 @@
 	desc = "Used to build newscasters, just secure to the wall."
 	icon_state = "newscaster"
 	item_state = "syringe_kit"
-	m_amt = 14000
-	g_amt = 8000
+	materials = list(MAT_METAL=14000, MAT_GLASS=8000)
 	mount_reqs = list("simfloor", "nospace")
 
 /obj/item/mounted/frame/newscaster_frame/try_build(turf/on_wall, mob/user)

code/game/objects/items/stacks/rods.dm

@@ -10,7 +10,7 @@
 	throwforce = 10.0
 	throw_speed = 3
 	throw_range = 7
-	m_amt = 1000
+	materials = list(MAT_METAL=1000)
 	max_amount = 60
 	attack_verb = list("hit", "bludgeoned", "whacked")
 	hitsound = 'sound/weapons/grenadelaunch.ogg'

code/game/objects/items/stacks/sheets/glass.dm

@@ -18,7 +18,7 @@
 	desc = "HOLY SHEET! That is a lot of glass."
 	singular_name = "glass sheet"
 	icon_state = "sheet-glass"
-	g_amt = MINERAL_MATERIAL_AMOUNT
+	materials = list(MAT_GLASS=MINERAL_MATERIAL_AMOUNT)
 	origin_tech = "materials=1"
 	var/created_window = /obj/structure/window/basic
 	var/full_window = /obj/structure/window/full/basic
@@ -28,7 +28,7 @@
 	desc = "HOLY SHEET! That is a lot of glass."
 	singular_name = "glass sheet"
 	icon_state = "sheet-glass"
-	g_amt = 0
+	materials = list()
 	created_window = /obj/structure/window/basic
 
 /obj/item/stack/sheet/glass/attack_self(mob/user as mob)
@@ -153,8 +153,7 @@
 	desc = "Glass which seems to have rods or something stuck in them."
 	singular_name = "reinforced glass sheet"
 	icon_state = "sheet-rglass"
-	g_amt = MINERAL_MATERIAL_AMOUNT
-	m_amt = MINERAL_MATERIAL_AMOUNT / 2
+	materials = list(MAT_METAL=MINERAL_MATERIAL_AMOUNT/2, MAT_GLASS=MINERAL_MATERIAL_AMOUNT)
 	origin_tech = "materials=2"
 	var/created_window = /obj/structure/window/reinforced
 	var/full_window = /obj/structure/window/full/reinforced
@@ -164,8 +163,7 @@
 	desc = "Glass which seems to have rods or something stuck in them."
 	singular_name = "reinforced glass sheet"
 	icon_state = "sheet-rglass"
-	g_amt = 0
-	m_amt = 0
+	materials = list()
 
 /obj/item/stack/sheet/rglass/attack_self(mob/user as mob)
 	construct_window(user)
@@ -272,7 +270,7 @@
 	desc = "A very strong and very resistant sheet of a plasma-glass alloy."
 	singular_name = "glass sheet"
 	icon_state = "sheet-plasmaglass"
-	g_amt = MINERAL_MATERIAL_AMOUNT * 2
+	materials = list(MAT_GLASS=MINERAL_MATERIAL_AMOUNT*2)
 	origin_tech = "materials=3;plasma=2"
 	var/created_window = /obj/structure/window/plasmabasic
 	var/full_window = /obj/structure/window/full/plasmabasic
@@ -361,8 +359,7 @@
 	desc = "Plasma glass which seems to have rods or something stuck in them."
 	singular_name = "reinforced plasma glass sheet"
 	icon_state = "sheet-plasmarglass"
-	g_amt = MINERAL_MATERIAL_AMOUNT * 2
-	m_amt = MINERAL_MATERIAL_AMOUNT / 2
+	materials = list(MAT_METAL=MINERAL_MATERIAL_AMOUNT/2, MAT_GLASS=MINERAL_MATERIAL_AMOUNT*2)
 	origin_tech = "materials=3;plasma=2"
 	var/created_window = /obj/structure/window/plasmareinforced
 	var/full_window = /obj/structure/window/full/plasmareinforced

code/game/objects/items/stacks/sheets/sheet_types.dm

@@ -86,7 +86,7 @@ var/global/list/datum/stack_recipe/metal_recipes = list ( \
 	desc = "Sheets made out off metal. It has been dubbed Metal Sheets."
 	singular_name = "metal sheet"
 	icon_state = "sheet-metal"
-	m_amt = 3750
+	materials = list(MAT_METAL=MINERAL_MATERIAL_AMOUNT)
 	throwforce = 10.0
 	flags = CONDUCT
 	origin_tech = "materials=1"
@@ -96,7 +96,7 @@ var/global/list/datum/stack_recipe/metal_recipes = list ( \
 	desc = "Sheets made out off metal. It has been dubbed Metal Sheets."
 	singular_name = "metal sheet"
 	icon_state = "sheet-metal"
-	m_amt = 0
+	materials = list()
 	throwforce = 10.0
 	flags = CONDUCT
 
@@ -124,7 +124,7 @@ var/global/list/datum/stack_recipe/plasteel_recipes = list ( \
 	desc = "This sheet is an alloy of iron and plasma."
 	icon_state = "sheet-plasteel"
 	item_state = "sheet-metal"
-	m_amt = 7500
+	materials = list(MAT_METAL=6000, MAT_PLASMA=6000)
 	throwforce = 10.0
 	flags = CONDUCT
 	origin_tech = "materials=2"

code/game/objects/items/stacks/tiles/plasteel.dm

@@ -6,7 +6,7 @@
 	icon_state = "tile"
 	w_class = 3.0
 	force = 6.0
-	m_amt = 937.5
+	materials = list(MAT_METAL=937.5)
 	throwforce = 10.0
 	throw_speed = 3
 	throw_range = 7

code/game/objects/items/toys.dm

@@ -134,8 +134,7 @@
 	flags = CONDUCT
 	slot_flags = SLOT_BELT
 	w_class = 3.0
-	g_amt = 10
-	m_amt = 10
+	materials = list(MAT_METAL=10, MAT_GLASS=10)
 	attack_verb = list("struck", "pistol whipped", "hit", "bashed")
 	var/bullets = 7.0
 
@@ -190,8 +189,7 @@
 	icon_state = "357-7"
 	flags = CONDUCT
 	w_class = 1.0
-	g_amt = 10
-	m_amt = 10
+	materials = list(MAT_METAL=10, MAT_GLASS=10)
 	var/amount_left = 7.0
 
 	update_icon()

code/game/objects/items/weapons/RCD.dm

@@ -18,7 +18,7 @@ RCD
 	throw_speed = 3
 	throw_range = 5
 	w_class = 3.0
-	m_amt = 100000
+	materials = list(MAT_METAL=100000)
 	origin_tech = "engineering=4;materials=2"
 	var/datum/effect/effect/system/spark_spread/spark_system
 	var/max_matter = 100
@@ -206,8 +206,7 @@ RCD
 	density = 0
 	anchored = 0.0
 	origin_tech = "materials=2"
-	m_amt = 16000
-	g_amt = 8000
+	materials = list(MAT_METAL=16000, MAT_GLASS=8000)
 	var/ammoamt = 20
 
 /obj/item/weapon/rcd_ammo/large

code/game/objects/items/weapons/extinguisher.dm

@@ -11,7 +11,7 @@
 	throw_speed = 2
 	throw_range = 7
 	force = 10
-	m_amt = 90
+	materials = list(MAT_METAL=90)
 	attack_verb = list("slammed", "whacked", "bashed", "thunked", "battered", "bludgeoned", "thrashed")
 	var/max_water = 50
 	var/last_use = 1.0
@@ -31,7 +31,7 @@
 	throwforce = 2
 	w_class = 2.0
 	force = 3.0
-	m_amt = 0
+	materials = list()
 	max_water = 30
 	sprite_name = "miniFE"
 

code/game/objects/items/weapons/flamethrower.dm

@@ -10,7 +10,7 @@
 	throw_speed = 1
 	throw_range = 5
 	w_class = 3.0
-	m_amt = 500
+	materials = list(MAT_METAL=500)
 	origin_tech = "combat=1;plasmatech=1"
 	var/status = 0
 	var/throw_amount = 100

code/game/objects/items/weapons/handcuffs.dm

@@ -10,7 +10,7 @@
 	w_class = 2.0
 	throw_speed = 2
 	throw_range = 5
-	m_amt = 500
+	materials = list(MAT_METAL=500)
 	origin_tech = "materials=1"
 	var/breakouttime = 600 //Deciseconds = 60s = 1 minutes
 	var/cuffsound = 'sound/weapons/handcuffs.ogg'

code/game/objects/items/weapons/kitchen.dm

@@ -141,7 +141,7 @@
 	throwforce = 6.0
 	throw_speed = 3
 	throw_range = 6
-	m_amt = 12000
+	materials = list(MAT_METAL=12000)
 	origin_tech = "materials=1"
 	attack_verb = list("slashed", "stabbed", "sliced", "torn", "ripped", "diced", "cut")
 
@@ -183,7 +183,6 @@
 	throwforce = 8.0
 	throw_speed = 3
 	throw_range = 6
-	m_amt = 12000
 	origin_tech = "materials=1"
 	attack_verb = list("cleaved", "slashed", "stabbed", "sliced", "torn", "ripped", "diced", "cut")
 	sharp = 1

code/game/objects/items/weapons/misc.dm

@@ -31,7 +31,7 @@
 	force = 5.0
 	throwforce = 7.0
 	w_class = 2.0
-	m_amt = 50
+	materials = list(MAT_METAL=50)
 	attack_verb = list("bludgeoned", "whacked", "disciplined", "thrashed")
 
 /obj/item/weapon/c_tube

code/game/objects/items/weapons/paint.dm

@@ -8,8 +8,7 @@ var/global/list/cached_icons = list()
 	icon = 'icons/obj/items.dmi'
 	icon_state = "paint_neutral"
 	item_state = "paintcan"
-	m_amt = 200
-	g_amt = 0
+	materials = list(MAT_METAL=200)
 	w_class = 3.0
 	amount_per_transfer_from_this = 10
 	possible_transfer_amounts = list(10,20,30,50,70)

code/game/objects/items/weapons/power_cells.dm

@@ -13,8 +13,7 @@
 	var/charge = 0	// note %age conveted to actual charge in New
 	var/maxcharge = 10000
 	rating = 1
-	m_amt = 700
-	g_amt = 50
+	materials = list(MAT_METAL=700, MAT_GLASS=50)
 	var/rigged = 0		// true if rigged to explode
 	var/minor_fault = 0 //If not 100% reliable, it will build up faults.
 	var/construction_cost = list("metal"=750,"glass"=75)
@@ -30,7 +29,7 @@
 	origin_tech = "powerstorage=0"
 	maxcharge = 5000
 	rating = 2
-	g_amt = 40
+	materials = list(MAT_GLASS=40)
 
 /obj/item/weapon/stock_parts/cell/crap/empty/New()
 	..()
@@ -41,7 +40,7 @@
 	origin_tech = "powerstorage=0"
 	maxcharge = 6000	//6000 max charge / 1000 charge per shot = six shots
 	rating = 2.5
-	g_amt = 40
+	materials = list(MAT_GLASS=40)
 
 /obj/item/weapon/stock_parts/cell/secborg/empty/New()
 	..()
@@ -53,7 +52,7 @@
 	icon_state = "hcell"
 	maxcharge = 15000
 	rating = 3
-	g_amt = 60
+	materials = list(MAT_GLASS=60)
 
 /obj/item/weapon/stock_parts/cell/high/empty/New()
 	..()
@@ -64,7 +63,7 @@
 	origin_tech = "powerstorage=5"
 	icon_state = "scell"
 	maxcharge = 20000
-	g_amt = 70
+	materials = list(MAT_GLASS=70)
 	rating = 4
 	construction_cost = list("metal"=750,"glass"=100)
 
@@ -78,7 +77,7 @@
 	icon_state = "hpcell"
 	maxcharge = 30000
 	rating = 5
-	g_amt = 80
+	materials = list(MAT_GLASS=80)
 	construction_cost = list("metal"=500,"glass"=150,"gold"=200,"silver"=200)
 
 /obj/item/weapon/stock_parts/cell/hyper/empty/New()
@@ -90,7 +89,7 @@
 	origin_tech = "powerstorage=7"
 	icon_state = "bscell"
 	maxcharge = 40000
-	g_amt = 80
+	materials = list(MAT_GLASS=80)
 	rating = 6
 	construction_cost = list("metal"=800,"gold"=300,"silver"=300,"glass"=160,"diamond"=160)
 
@@ -104,7 +103,7 @@
 	origin_tech =  null
 	maxcharge = 30000
 	rating = 6
-	g_amt = 80
+	materials = list(MAT_GLASS=80)
 	use()
 		return 1
 
@@ -117,8 +116,7 @@
 	charge = 100
 	maxcharge = 3000
 	rating = 1
-	m_amt = 0
-	g_amt = 0
+	materials = list()
 	minor_fault = 1
 
 
@@ -130,8 +128,7 @@
 	icon_state = "yellow slime extract" //"potato_battery"
 	maxcharge = 10000
 	rating = 3
-	m_amt = 0
-	g_amt = 0
+	materials = list()
 
 /obj/item/weapon/stock_parts/cell/pulse/carbine
 	name = "pulse carbine power cell"
@@ -146,7 +143,7 @@
 	desc = "A standard ninja-suit power cell."
 	maxcharge = 10000
 	rating = 3
-	g_amt = 60
+	materials = list(MAT_GLASS=60)
 
 /obj/item/weapon/stock_parts/cell/emproof
 	name = "\improper EMP-proof cell"

code/game/objects/items/weapons/shards.dm

@@ -11,7 +11,7 @@
 	force = 5.0
 	throwforce = 10.0
 	item_state = "shard-glass"
-	g_amt = MINERAL_MATERIAL_AMOUNT
+	materials = list(MAT_GLASS=MINERAL_MATERIAL_AMOUNT)
 	attack_verb = list("stabbed", "slashed", "sliced", "cut")
 	hitsound = 'sound/weapons/bladeslice.ogg'
 

code/game/objects/items/weapons/shields.dm

@@ -12,8 +12,7 @@
 	throw_speed = 2
 	throw_range = 3
 	w_class = 4
-	g_amt = 7500
-	m_amt = 1000
+	materials = list(MAT_GLASS=7500, MAT_METAL=1000)
 	origin_tech = "materials=2"
 	attack_verb = list("shoved", "bashed")
 	var/cooldown = 0 //shield bash cooldown. based on world.time

code/game/objects/items/weapons/stock_parts.dm

@@ -74,45 +74,42 @@
 	desc = "Used in the construction of computers and other devices with a interactive console."
 	icon_state = "screen"
 	origin_tech = "materials=1"
-	g_amt = 200
+	materials = list(MAT_GLASS=200)
 
 /obj/item/weapon/stock_parts/capacitor
 	name = "capacitor"
 	desc = "A basic capacitor used in the construction of a variety of devices."
 	icon_state = "capacitor"
 	origin_tech = "powerstorage=1"
-	m_amt = 50
-	g_amt = 50
+	materials = list(MAT_METAL=50, MAT_GLASS=50)
 
 /obj/item/weapon/stock_parts/scanning_module
 	name = "scanning module"
 	desc = "A compact, high resolution scanning module used in the construction of certain devices."
 	icon_state = "scan_module"
 	origin_tech = "magnets=1"
-	m_amt = 50
-	g_amt = 20
+	materials = list(MAT_METAL=50, MAT_GLASS=20)
 
 /obj/item/weapon/stock_parts/manipulator
 	name = "micro-manipulator"
 	desc = "A tiny little manipulator used in the construction of certain devices."
 	icon_state = "micro_mani"
 	origin_tech = "materials=1;programming=1"
-	m_amt = 30
+	materials = list(MAT_METAL=30)
 
 /obj/item/weapon/stock_parts/micro_laser
 	name = "micro-laser"
 	desc = "A tiny laser used in certain devices."
 	icon_state = "micro_laser"
 	origin_tech = "magnets=1"
-	m_amt = 10
-	g_amt = 20
+	materials = list(MAT_METAL=10, MAT_GLASS=20)
 
 /obj/item/weapon/stock_parts/matter_bin
 	name = "matter bin"
 	desc = "A container for hold compressed matter awaiting re-construction."
 	icon_state = "matter_bin"
 	origin_tech = "materials=1"
-	m_amt = 80
+	materials = list(MAT_METAL=80)
 
 //Rank 2
 
@@ -122,8 +119,7 @@
 	icon_state = "adv_capacitor"
 	origin_tech = "powerstorage=3"
 	rating = 2
-	m_amt = 50
-	g_amt = 50
+	materials = list(MAT_METAL=50, MAT_GLASS=50)
 
 /obj/item/weapon/stock_parts/scanning_module/adv
 	name = "advanced scanning module"
@@ -131,8 +127,7 @@
 	icon_state = "adv_scan_module"
 	origin_tech = "magnets=3"
 	rating = 2
-	m_amt = 50
-	g_amt = 20
+	materials = list(MAT_METAL=50, MAT_GLASS=20)
 
 /obj/item/weapon/stock_parts/manipulator/nano
 	name = "nano-manipulator"
@@ -140,7 +135,7 @@
 	icon_state = "nano_mani"
 	origin_tech = "materials=3,programming=2"
 	rating = 2
-	m_amt = 30
+	materials = list(MAT_METAL=30)
 
 /obj/item/weapon/stock_parts/micro_laser/high
 	name = "high-power micro-laser"
@@ -148,8 +143,7 @@
 	icon_state = "high_micro_laser"
 	origin_tech = "magnets=3"
 	rating = 2
-	m_amt = 10
-	g_amt = 20
+	materials = list(MAT_METAL=10, MAT_GLASS=20)
 
 /obj/item/weapon/stock_parts/matter_bin/adv
 	name = "advanced matter bin"
@@ -157,7 +151,7 @@
 	icon_state = "advanced_matter_bin"
 	origin_tech = "materials=3"
 	rating = 2
-	m_amt = 80
+	materials = list(MAT_METAL=80)
 
 //Rating 3
 
@@ -167,8 +161,7 @@
 	icon_state = "super_capacitor"
 	origin_tech = "powerstorage=5;materials=4"
 	rating = 3
-	m_amt = 50
-	g_amt = 50
+	materials = list(MAT_METAL=50, MAT_GLASS=50)
 
 /obj/item/weapon/stock_parts/scanning_module/phasic
 	name = "phasic scanning module"
@@ -176,8 +169,7 @@
 	icon_state = "super_scan_module"
 	origin_tech = "magnets=5"
 	rating = 3
-	m_amt = 50
-	g_amt = 20
+	materials = list(MAT_METAL=50, MAT_GLASS=20)
 
 /obj/item/weapon/stock_parts/manipulator/pico
 	name = "pico-manipulator"
@@ -185,7 +177,7 @@
 	icon_state = "pico_mani"
 	origin_tech = "materials=5,programming=2"
 	rating = 3
-	m_amt = 30
+	materials = list(MAT_METAL=30)
 
 /obj/item/weapon/stock_parts/micro_laser/ultra
 	name = "ultra-high-power micro-laser"
@@ -193,8 +185,7 @@
 	desc = "A tiny laser used in certain devices."
 	origin_tech = "magnets=5"
 	rating = 3
-	m_amt = 10
-	g_amt = 20
+	materials = list(MAT_METAL=10, MAT_GLASS=20)
 
 /obj/item/weapon/stock_parts/matter_bin/super
 	name = "super matter bin"
@@ -202,7 +193,7 @@
 	icon_state = "super_matter_bin"
 	origin_tech = "materials=5"
 	rating = 3
-	m_amt = 80
+	materials = list(MAT_METAL=80)
 
 //Rating 4
 
@@ -212,8 +203,7 @@
 	icon_state = "quadratic_capacitor"
 	origin_tech = "powerstorage=6;materials=5"
 	rating = 4
-	m_amt = 50
-	g_amt = 50
+	materials = list(MAT_METAL=50, MAT_GLASS=50)
 
 /obj/item/weapon/stock_parts/scanning_module/triphasic
 	name = "triphasic scanning module"
@@ -221,8 +211,7 @@
 	icon_state = "triphasic_scan_module"
 	origin_tech = "magnets=6"
 	rating = 4
-	m_amt = 50
-	g_amt = 20
+	materials = list(MAT_METAL=50, MAT_GLASS=20)
 
 /obj/item/weapon/stock_parts/manipulator/femto
 	name = "femto-manipulator"
@@ -230,7 +219,7 @@
 	icon_state = "femto_mani"
 	origin_tech = "materials=6;programming=3"
 	rating = 4
-	m_amt = 30
+	materials = list(MAT_METAL=30)
 
 /obj/item/weapon/stock_parts/micro_laser/quadultra
 	name = "quad-ultra micro-laser"
@@ -238,8 +227,7 @@
 	desc = "A tiny laser used in certain devices."
 	origin_tech = "magnets=6"
 	rating = 4
-	m_amt = 10
-	g_amt = 20
+	materials = list(MAT_METAL=10, MAT_GLASS=20)
 
 /obj/item/weapon/stock_parts/matter_bin/bluespace
 	name = "bluespace matter bin"
@@ -247,7 +235,7 @@
 	icon_state = "bluespace_matter_bin"
 	origin_tech = "materials=6"
 	rating = 4
-	m_amt = 80
+	materials = list(MAT_METAL=80)
 
 // Subspace stock parts
 
@@ -256,54 +244,49 @@
 	icon_state = "subspace_ansible"
 	desc = "A compact module capable of sensing extradimensional activity."
 	origin_tech = "programming=2;magnets=3;materials=2;bluespace=1"
-	m_amt = 30
-	g_amt = 10
+	materials = list(MAT_METAL=30, MAT_GLASS=10)
 
 /obj/item/weapon/stock_parts/subspace/filter
 	name = "hyperwave filter"
 	icon_state = "hyperwave_filter"
 	desc = "A tiny device capable of filtering and converting super-intense radiowaves."
 	origin_tech = "programming=2;magnets=1"
-	m_amt = 30
-	g_amt = 10
+	materials = list(MAT_METAL=30, MAT_GLASS=10)
 
 /obj/item/weapon/stock_parts/subspace/amplifier
 	name = "subspace amplifier"
 	icon_state = "subspace_amplifier"
 	desc = "A compact micro-machine capable of amplifying weak subspace transmissions."
 	origin_tech = "programming=2;magnets=2;materials=1;bluespace=1"
-	m_amt = 30
-	g_amt = 10
+	materials = list(MAT_METAL=30, MAT_GLASS=10)
 
 /obj/item/weapon/stock_parts/subspace/treatment
 	name = "subspace treatment disk"
 	icon_state = "treatment_disk"
 	desc = "A compact micro-machine capable of stretching out hyper-compressed radio waves."
 	origin_tech = "programming=2;magnets=1;materials=3;bluespace=1"
-	m_amt = 30
-	g_amt = 10
+	materials = list(MAT_METAL=30, MAT_GLASS=10)
 
 /obj/item/weapon/stock_parts/subspace/analyzer
 	name = "subspace wavelength analyzer"
 	icon_state = "wavelength_analyzer"
 	desc = "A sophisticated analyzer capable of analyzing cryptic subspace wavelengths."
 	origin_tech = "programming=2;magnets=2;materials=2;bluespace=1"
-	m_amt = 30
-	g_amt = 10
+	materials = list(MAT_METAL=30, MAT_GLASS=10)
 
 /obj/item/weapon/stock_parts/subspace/crystal
 	name = "ansible crystal"
 	icon_state = "ansible_crystal"
 	desc = "A crystal made from pure glass used to transmit laser databursts to subspace."
 	origin_tech = "magnets=2;materials=2;bluespace=1"
-	g_amt = 50
+	materials = list(MAT_GLASS=50)
 
 /obj/item/weapon/stock_parts/subspace/transmitter
 	name = "subspace transmitter"
 	icon_state = "subspace_transmitter"
 	desc = "A large piece of equipment used to open a window into the subspace dimension."
 	origin_tech = "magnets=3;materials=3;bluespace=2"
-	m_amt = 50
+	materials = list(MAT_METAL=50)
 
 /obj/item/weapon/research//Makes testing much less of a pain -Sieve
 	name = "research"

code/game/objects/items/weapons/storage/bags.dm

@@ -365,7 +365,7 @@
 	throw_range = 5
 	w_class = 4.0
 	flags = CONDUCT
-	m_amt = 3000
+	materials = list(MAT_METAL=3000)
 
 /obj/item/weapon/storage/bag/tray/attack(mob/living/M as mob, mob/living/user as mob)
 	..()

code/game/objects/items/weapons/storage/boxes.dm

@@ -133,7 +133,7 @@
 /obj/item/weapon/storage/box/gauge
 	name = "box of 12 gauge slugs"
 	desc = "It has a picture of a gun and several warning symbols on the front."
-	m_amt = 50000
+	materials = list(MAT_METAL=28000)
 
 	New()
 		..()

code/game/objects/items/weapons/syndie_uplink.dm

@@ -14,7 +14,7 @@
 	item_state = "radio"
 	throw_speed = 4
 	throw_range = 20
-	m_amt = 100
+	materials = list(MAT_METAL=100)
 	origin_tech = "magnets=2;syndicate=3"*/
 
 /obj/item/weapon/SWF_uplink
@@ -34,5 +34,5 @@
 	w_class = 2.0
 	throw_speed = 4
 	throw_range = 20
-	m_amt = 100
+	materials = list(MAT_METAL=100)
 	origin_tech = "magnets=1"

code/game/objects/items/weapons/table_rack_parts.dm

@@ -12,7 +12,7 @@
 	gender = PLURAL
 	icon = 'icons/obj/items.dmi'
 	icon_state = "table_parts"
-	m_amt = 3750
+	materials = list(MAT_METAL=3750)
 	flags = CONDUCT
 	attack_verb = list("slammed", "bashed", "battered", "bludgeoned", "thrashed", "whacked")
 
@@ -21,7 +21,7 @@
 	desc = "Hard table parts. Well...harder..."
 	icon = 'icons/obj/items.dmi'
 	icon_state = "reinf_tableparts"
-	m_amt = 7500
+	materials = list(MAT_METAL=7500)
 	flags = CONDUCT
 
 /obj/item/weapon/table_parts/wood
@@ -42,7 +42,7 @@
 	icon = 'icons/obj/items.dmi'
 	icon_state = "rack_parts"
 	flags = CONDUCT
-	m_amt = 3750
+	materials = list(MAT_METAL=3750)
 
 /*
  * Table Parts

code/game/objects/items/weapons/teleportation.dm

@@ -21,7 +21,7 @@
 	item_state = "electronic"
 	throw_speed = 4
 	throw_range = 20
-	m_amt = 400
+	materials = list(MAT_METAL=400)
 	origin_tech = "magnets=1"
 
 /obj/item/weapon/locator/attack_self(mob/user as mob)
@@ -132,7 +132,7 @@ Frequency:
 	w_class = 2.0
 	throw_speed = 3
 	throw_range = 5
-	m_amt = 10000
+	materials = list(MAT_METAL=10000)
 	origin_tech = "magnets=1;bluespace=3"
 	var/active_portals = 0
 

code/game/objects/items/weapons/tools.dm

@@ -25,7 +25,7 @@
 	force = 5.0
 	throwforce = 7.0
 	w_class = 2.0
-	m_amt = 150
+	materials = list(MAT_METAL=150)
 	origin_tech = "materials=1;engineering=1"
 	attack_verb = list("bashed", "battered", "bludgeoned", "whacked")
 
@@ -35,7 +35,7 @@
  */
 /obj/item/weapon/screwdriver
 	name = "screwdriver"
-	desc = "You can be totally screwwy with this."
+	desc = "You can be totally screwy with this."
 	icon = 'icons/obj/items.dmi'
 	icon_state = "screwdriver"
 	flags = CONDUCT
@@ -45,8 +45,7 @@
 	throwforce = 5.0
 	throw_speed = 3
 	throw_range = 5
-	g_amt = 0
-	m_amt = 75
+	materials = list(MAT_METAL=75)
 	attack_verb = list("stabbed")
 	hitsound = 'sound/weapons/bladeslice.ogg'
 
@@ -84,7 +83,7 @@
 	return
 
 /obj/item/weapon/screwdriver/attack(mob/living/carbon/M as mob, mob/living/carbon/user as mob)
-	if(!istype(M) || user.a_intent == "help")	
+	if(!istype(M) || user.a_intent == "help")
 		return ..()
 	if(user.zone_sel.selecting != "eyes" && user.zone_sel.selecting != "head")
 		return ..()
@@ -106,7 +105,7 @@
 	throw_speed = 3
 	throw_range = 7
 	w_class = 2.0
-	m_amt = 80
+	materials = list(MAT_METAL=80)
 	origin_tech = "materials=1;engineering=1"
 	attack_verb = list("pinched", "nipped")
 	hitsound = "sound/items/Wirecutter.ogg"
@@ -148,8 +147,7 @@
 	w_class = 2.0
 
 	//Cost to make in the autolathe
-	m_amt = 70
-	g_amt = 20
+	materials = list(MAT_METAL=70, MAT_GLASS=30)
 
 	//R&D tech level
 	origin_tech = "engineering=1"
@@ -409,24 +407,21 @@
 /obj/item/weapon/weldingtool/largetank
 	name = "Industrial Welding Tool"
 	max_fuel = 40
-	m_amt = 70
-	g_amt = 60
+	materials = list(MAT_METAL=70, MAT_GLASS=60)
 	origin_tech = "engineering=2"
 
 /obj/item/weapon/weldingtool/hugetank
 	name = "Upgraded Welding Tool"
 	max_fuel = 80
 	w_class = 3.0
-	m_amt = 70
-	g_amt = 120
+	materials = list(MAT_METAL=70, MAT_GLASS=120)
 	origin_tech = "engineering=3"
 
 /obj/item/weapon/weldingtool/experimental
 	name = "Experimental Welding Tool"
 	max_fuel = 40
 	w_class = 3.0
-	m_amt = 70
-	g_amt = 120
+	materials = list(MAT_METAL=70, MAT_GLASS=120)
 	origin_tech = "engineering=4;plasma=3"
 	icon_state = "ewelder"
 	var/last_gen = 0
@@ -454,7 +449,7 @@
 	throwforce = 7.0
 	item_state = "crowbar"
 	w_class = 2.0
-	m_amt = 50
+	materials = list(MAT_METAL=50)
 	origin_tech = "engineering=1"
 	attack_verb = list("attacked", "bashed", "battered", "bludgeoned", "whacked")
 
@@ -470,7 +465,7 @@
 	w_class = 3
 	throw_speed = 3
 	throw_range = 3
-	m_amt = 66
+	materials = list(MAT_METAL=70)
 	icon_state = "crowbar_large"
 
 /obj/item/weapon/weldingtool/attack(mob/M as mob, mob/user as mob)
@@ -478,7 +473,7 @@
 		var/mob/living/carbon/human/H = M
 		var/obj/item/organ/external/S = H.organs_by_name[user.zone_sel.selecting]
 
-		if (!S) 
+		if (!S)
 			return
 		if(!(S.status & ORGAN_ROBOT) || user.a_intent != "help" || S.open == 2)
 			return ..()

code/game/objects/items/weapons/weaponry.dm

@@ -158,7 +158,7 @@ obj/item/weapon/wirerod
 	force = 9
 	throwforce = 10
 	w_class = 3
-	m_amt = 1875
+	materials = list(MAT_METAL=1875)
 	attack_verb = list("hit", "bludgeoned", "whacked", "bonked")
 
 obj/item/weapon/wirerod/attackby(var/obj/item/I, mob/user as mob, params)

code/game/objects/items/weapons/wires.dm

@@ -8,7 +8,7 @@
 	var/amount = 1.0
 	var/laying = 0.0
 	var/old_lay = null
-	m_amt = 40
+	materials = list(MAT_METAL=40)
 	attack_verb = list("whipped", "lashed", "disciplined", "tickled")
 
 	suicide_act(mob/user)