diff --git a/init.lua b/init.lua
index e9d32cd..a7e2543 100644
--- a/init.lua
+++ b/init.lua
@@ -140,7 +140,7 @@ minetest.register_craft(
     {
         output = "technic:mv_centrifuge",
         recipe = {
-            {"default:copper_block", "technic:copper_plate", "default:copper_block"},
+            {"default:copperblock", "technic:copper_plate", "default:copperblock"},
             {"technic:copper_plate", "technic:machine_casing", "technic:copper_plate"},
             {"technic:copper_plate", "technic:mv_cable", "technic:copper_plate"}
         }
@@ -408,7 +408,7 @@ minetest.register_craft(
 )
 minetest.register_craft(
     {
-        output = "technic:rubber 2",
+        output = "technic:rubber 3",
         recipe = {
             {"technic:rubber_tree_grindings", "technic:rubber_tree_grindings", "technic:rubber_tree_grindings"},
             {"technic:rubber_tree_grindings", "default:coal_lump", "technic:rubber_tree_grindings"},
@@ -418,7 +418,7 @@ minetest.register_craft(
 )
 minetest.register_craft(
     {
-        output = "technic:rubber 2",
+        output = "technic:rubber 3",
         recipe = {
             {"technic:rubber_tree_grindings", "technic:rubber_tree_grindings", "technic:rubber_tree_grindings"},
             {"technic:rubber_tree_grindings", "technic:coal_dust", "technic:rubber_tree_grindings"},