The Copper Canister is a component used in the creation of the Refinery. It is crafted by placing 7 Copper Ingots in a U shape in a crafting table.
As of version 2.0.6 the crafting recipe changed from using Compressed Copper to Copper Ingots.
Galacticraft 2 (v2.0.6):
Galacticraft 2 (older versions):
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