Fixes #9597

code/game/objects/items/weapons/material/material_weapons.dm

@@ -23,6 +23,15 @@
 	if(!material_key)
 		material_key = default_material
 	set_material(material_key)
+	if(!material)
+		qdel(src)
+		return
+
+	matter = material.get_matter()
+	if(matter.len)
+		for(var/material_type in matter)
+			if(!isnull(matter[material_type]))
+				matter[material_type] *= force_divisor // May require a new var instead.
 
 /obj/item/weapon/material/proc/update_force()
 	if(edge || sharp)