Start in Cond A or C, do you think? Also, the ones that ended up not flat were lasered to give us the porting. There's some thought here that perhaps the heat from the laser cutting caused some warping, so we thought maybe water jet next time.
We have a need to make some very flat plates from hardened 17-7 PH stainless. The problem we're having is that the plates are ported and ground flat and parallel within 0.001", and we must have a final hardness of around 42Rc. We've already failed on one batch, where we ended up with the...
