What you said about the line width made a lot of sense. I scribe the lines down sometimes, guess I was doing more widening than deepening.
With proper preperation, your design could probably handle most commerical PE (with a pair of good clamps). Personally though, I try to avoid annealing the brass or scribbing down the lines as much as I could (less work). The alluminum alloy heavy duty brakes offers higher threshold to shear stress, therefor more forgiving to my human errors from the trials approach (laziness driven).
I still think it needs a stopper design to prevent lateral movements between the 2 plates (in both axis), but I’m going to try this as a PE vise. I like the finger on your tool that’s just a little wider than 1mm. For alluminum tools to have that, they need to be really thick, and since they’re CNC’ed, that meant much higher production costs.
Your tool is also thin, probably work well with a vise or helping hand [:)]
