This problem has been there since I put this together. If I’m carving 3D, 2D etc… everything works exactly as perfect as it should.
However, if I do anything that has a lot of Z-Axis movements, such as V Carving (Using Aspire) the Z-Axis will get higher and higher. I’ve tried lowering the speed to 100 mm to no avail.
I was carving a Lady Liberty coin today using V-Carve and less than half way through the Z-Axis was almost 3 mm higher than it thought it was, I have a big heat sink on the shield with Artic Silver, however no fan. The heat sink was warm as was the stepper on the Z-Axis.
Does this sound like a heat related issue? I did some searching and it seemed the Z Axis would go deeper and deeper if there was a missed step or heat issue, mine is getting higher and higher.
V-Carving with Aspire results in many deep plunges with a v-bit, and depending on flex in your spoil board, speed of your spindle, sharpness of your bit, may be slipping the bit/router/clamp up when it can’t complete a deep cut. Loosing steps when trying to go down. The stepper thinks it has made the cut, but now Z-=0 is just a little higher. Etc…