hammer smithing bugged?

[Lukyn]

its impossible to craft hammer, there is not enough voxels

[idiomcritter]

if we're talking about the Helve hammer? then 2 ingots are required.

 

[ifoz]

Sometimes things require more than one ingot. You can add another ingot to a work item on an anvil the way you add an ingot normally.
I also assume you are talking about the helve hammer, as the regular hammer only requires one ingot.
I hope this helps!