Requiem Shard

Attempting to smelt tin items with GM engineering gives the message: "You have no idea how to work this metal" (lol)

edit: seems related principally to the tin resource, dunno about other resources.

Clocks are unsmeltable.

Pickaxes and hatchets are unsmeltable

Iron tomahawks cannot be smelted. Gives the ol "YOU HAVE NO IDEA HOW TO WORK THIS METAL" message.