I too am seeing the issue with making blue circut boards, it will not accept any silver bars. It also seems the old cobalt ore is replaced with steel cobalt ore, and the old is no longer useful?

MOD: Forgot to mention, I am using the full BOBS mod as well as your entire set.

Holy crap man, you are amazing.... This is an awesome build and its sweet that we can see how you made it! Rock on man, Rock on