Anyone have any guidance on how to setup a roller style rotary using the A axis? Previously I had swapped the Y axis control to the the roller with good success calculating the the steps per mm based on the circumference of the roller. I would then size the image to be engraved relative to the diameter of the part being processed.
Right now I am using 200 steps per rev with 1/16 microstepping. The rollers are 35.6 mm in diameter. (20016)/(35.63.14 roller circumference) = 28.87 steps per mm. This is the value I send to GRBL.
When creating an operation in LaserWeb, I set the A diameter to 50mm and the engrave pattern is a 10mm tall piece of art. The issue is that the resulting G code and etched the pattern end up being closer to 31mm
I must be missing something. What is the A diameter referring to? It does not seem to take into account anything on the GRBL side?