any Oak Door (#minecraft:wooden_doors) + Copper Casing → Copper Door
No recipe of Create 6.0.10 uses Copper Door.
Textures, models and item names © simibubi and the Create contributors.
Recipes, names and numbers are read from the mod files of Create 6.0.10 for Minecraft 1.21.1 (NeoForge). Not affiliated with the mod authors, Mojang or Microsoft.