I've made an extremely simple smithing mod while I was working on a post-apocalyptic game, and I've just discovered you have a forum so I decided to upload it.

It's simply an anvil that acts like an npc added to the camp that you can talk to(also adds an npc who is a smith). I've never tested it with anything other than the demo.....yet. It also overrides the goblins allowing them to drop ingots. It may be extremely OP as you can almost forge any metal armor. There's actually quite a bit to it and I was hoping to use a system like this in my game I've been working on. Feel free to expand it. The implementation of it may also be a little hacky, I've overridden the entire map scene.

http://www.mediafire.com/file/65g7q8unjb78jjy/smithing.zip

Just extract the folder from the zip and add it to "mods", then load it in the menu.