I'm wondering if there's a boro black that won't get devit or discolor when being squashed, cut, reheated and shaped. Maybe Raven which I don't have yet. Tried jet and onyx. Maybe I'm doing something wrong too much oxy? Any suggestions appreciated.
Most blacks will grey a bit when they are reduced. Sounds like not enough Oxy to me. I use TAG blackjack. Not extremely dense but it works easy almost like clear. It will also grey if you work it in reduction.