diff --git a/techage.lua b/techage.lua
index e582982..d85ec07 100644
--- a/techage.lua
+++ b/techage.lua
@@ -62,6 +62,95 @@ minetest.register_craft({
     }
 })
 
+
+
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:afualite_cobble', }} })
+minetest.register_craft({
+    output = 'default:cobble',    
+	recipe = {{ 'underch:amphibolite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+	recipe = {{ 'underch:andesite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:aplite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:basalt_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:dark_vindesite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:di})ite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:dolomite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:emutite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:gabbro_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:gneiss_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:granite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:green_slimestone_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+    recipe = {{ 'underch:hekt})ite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:limestone_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:marble_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:omphyrite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble', 	
+     recipe = {{ 'underch:pegmatite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble', 	
+     recipe = {{ 'underch:peridotite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:phonolite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:phylite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:purple_slimestone_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:quartzite_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:red_slimestone_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:schist_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:sichamine_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:slate_cobble',}} })
+minetest.register_craft({
+    output = 'default:cobble',
+     recipe = {{ 'underch:vindesite_cobble',}} })
+
+
+
 techage.add_grinder_recipe({input="multidecor:consolidated_oil", output="techage:plastic_granules"})
 techage.add_grinder_recipe({input="ethereal:wild_onion_plant 10", output="dye:white"})