diff --git a/tools/repairkit.lua b/tools/repairkit.lua
index fab6f38..1ef971e 100644
--- a/tools/repairkit.lua
+++ b/tools/repairkit.lua
@@ -222,13 +222,29 @@ local function on_place(itemstack, placer, pointed_thing)
 	end
 end
 
+local function repair(itemstack, placer, pointed_thing)
+	if pointed_thing.type == "node" then
+		local pos = pointed_thing.under
+		if not placer or minetest.is_protected(pos, placer:get_player_name()) then
+			return
+		end
+		local number = techage.get_node_number(pos)
+		if number and not techage.get_node_info(number) then
+			techage.repair_number(pos)
+			minetest.chat_send_player(placer:get_player_name(), "Node repaired!")
+			itemstack:add_wear(65636/200)
+			return itemstack
+		end
+	end
+end
+
 minetest.register_tool("techage:repairkit", {
 	description = S("TechAge Repair Kit"),
 	inventory_image = "techage_repairkit.png",
 	wield_image = "techage_repairkit.png^[transformR270",
 	groups = {cracky=1, book=1},
-	--on_use = repair,
-	--on_place = repair,
+	on_use = repair,
+	on_place = repair,
 	node_placement_prediction = "",
 	stack_max = 1,
 })
@@ -254,3 +270,12 @@ minetest.register_craft({
 		{"default:steel_ingot", "", ""},
 	},
 })
+
+--minetest.register_craft({
+--	output = "techage:repairkit",
+--	recipe = {
+--		{"", "", ""},
+--		{"", "techage:end_wrench", ""},
+--		{"", "", ""},
+--	},
+--})