fixes mats (#46994)

code/game/mecha/mech_fabricator.dm

@@ -156,6 +156,7 @@
 
 	var/location = get_step(src,(dir))
 	var/obj/item/I = new D.build_path(location)
+	I.material_flags |= MATERIAL_NO_EFFECTS //Find a better way to do this.
 	I.set_custom_materials(res_coef)
 	say("\The [I] is complete.")
 	being_built = null

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

@@ -13,7 +13,7 @@
 /obj/item/stack
 	icon = 'icons/obj/stack_objects.dmi'
 	gender = PLURAL
-	material_modifier = 0.1
+	material_modifier = 0.01
 	var/list/datum/stack_recipe/recipes
 	var/singular_name
 	var/amount = 1

code/modules/research/machinery/_production.dm

@@ -88,8 +88,8 @@
 	for(var/i in 1 to amount)
 		var/obj/item/I = new path(get_turf(src))
 		if(efficient_with(I.type))
-			I.set_custom_materials(matlist.Copy())
 			I.material_flags |= MATERIAL_NO_EFFECTS //Find a better way to do this.
+			I.set_custom_materials(matlist.Copy())
 	SSblackbox.record_feedback("nested tally", "item_printed", amount, list("[type]", "[path]"))
 
 /obj/machinery/rnd/production/proc/check_mat(datum/design/being_built, var/mat)	// now returns how many times the item can be built with the material