[rocko]

I recently replaced my drivers because one gave up the ghost, with DM 452A units, on Larken's recommendation. It was easy once I got the wiring straight. Thank goodness for optocouplers.

I have 3 distinct and repeatable errors happening, as I tried this run 3 times using fresh G-code from Vectric V-Carve (thus the sets of 3 photos).
1 - The photos show an unevenness between the left and right edges, and 2 is a strange hump consistently showing up at the base of the vertex. Finally, the Z axis is not matching between tools. I set the top surface to Zero after each tool change and that has always ensured consistency. However, now suddenly, I am getting a disagreement of about 0.005" between the 90 degree V bit and the .0125 endmill. Finally 3 is that it looks like the 90 bit is starting off about 0.005" lower than the top of the workpiece, as the 3 stars across the middle are not crisp edged/pointed like they normally are.

I have not had this sort of error before. I am baffled and frustrated and clueless on how to solve it. I have cut a few other items too, testing, and had some odd/puzzling actions occur, again focused on scaling.