So I have a new X-carve, and I’m new to CNC, but I’m having a particularly hellish time with the Z-Axis, and I am now convinced that it’s not me. Its a 1000mm machine with an Acme screw and Nema 23 motors.
Basically the Z-Axis is cutting somewhat “interestingly” here are some examples (in inches):
A cut for a .204 acrylic needed to be set at .196 or it would cut through the waste board
A cut set at .22 for an inlay proceeded to cut through a .44 birch plywood board, so I hit the stop switch, I have no idea how deep it was going.
A test cut of .1 depth measures at .228 with the digital measure.
Since I plan on using this for veneer inlays, I need precision depth. I’ve troubleshot the hell out of this thing, the Y-Axis had current issues so I adjusted that potentiometer, so I know that behavior and it doesn’t seem to be that. I saw a video about calibrating, so I calibrated the XYZ. Z was off 10.5mm on a 30.5mm check, so I adjusted the Z steps, tested again and got a precise hit. Stepped into carve mode and checked the Z using the homing buttons and had a precise check over 30.5mm.
Then reran the test cut, which still came out .228" deep when it was set in easel at .1" (test easel here: http://easel.inventables.com/projects/dPQVcEJCI1FqKzqa_jcPwg). I have NO idea what to do at the moment. Any help people have would be golden.