Router bit not milling full depth

[paulus.v]

How are you setting the tool height?
Have you tried to manually jog to that 15.6 mm depth? Is it possible that the tool is shorter than the other ones and you reach the end of Z axis travel?

You can scroll the g-code to the end part where it cuts at full depth to see if it has the Z-15.6 or Z0 or Z-0.6 command, depending on where you have set the the Z0, on top surface of your workpiece or on the surface of the table..

[beemsquar2]

Hi Paul,

I have tried to jog the machine and I can manually jog the machine with the bit and z set to top of material to beyond th 15.6mm depth by another 27mm You might be onto something though, as it is the shortest bit I own and have tried to cut all the way through my material.

The gcode has the lines to suggest it is cutting to 15.6mm and 13.8mm, which I guess is the tabs and the final cut depth?

I just tried setting the z a little bellow the top surface to see if it would cut deeper and I did along some of the part and then went back to being above bottom of the panel surface. I wonder if there may be some slippage with the collet, so I may look at this now. It's a 3.175mm mm bit in a 3mm collet, but maybe as the bit is shorter it is only holding at the end of the collet? I don't have this issue when using my 3mm engraving bit, but then I'm only milling a few mm into the top surface. The next collet down is a 1.5-2mm collet, so it may not fit.

Thanks for your help guys, unfortunately the plot thickens.