First of all i really like your game, It's amazing how much work you put in it.
I've updated the game today to the version 0.0.71 and i saw the new wheel where you can choose the type of things you want to craft on the anvil. Everytime you need to press z to choose the type. Maybe it would be easier when you just hold the right mouse button before you can start the process on the anvil, or just have an indicator on it. I'm suggesting it because i've made many times the wrong part and over time it's a little bit frustrating.