Subject: Z-axis compensation Sun Oct 10, 2010 11:22 am
I'm trying to make a PCB with CNC router and Mach3. I am having a problem with the board position which cannot be setup precisely flat in relation to the milling tool in all its points, which means that you can set the value of Z only in 1 point of the board. As a result there will always be an error in moving the tool on Z axis which will increase with the size of the board. I guess there has to be some programmatic mechanism of compensating that error.
The below image shows the problem when the Z offset on one side of the board is not compensated:
Could anyone help me with setting up Mach3 to compensate this error?