I’m having an issue with my Nomad 3 and perhaps someone in this forum has a solution.
I’m trying to cut a 1/8” slot using a 1/8” flat end mill to do so. I’ve set up a pocket toolpath on a rectangle .1255” wide and 1” long (if the rectangle is exactly .125” wide I get an EMPTY TOOLPATH error). When my Nomad cuts the pocket it is .140” wide, not .125 to .126 in width. If I use a 1/16” cutter same thing happens. In order for me to get a 1/8” slot I must reduce the size of the rectangular slot to .110” and use the 16th inch cutter. This doesn’t seem right, my Nomad is cutting an oversized slot. This also occurs when I cut a hole, its over the size of the hole I want. Is this a software error, machine error or human error? Maybe someone else has experienced this and has a fix? The fix I’ve come up with is not very elegant.
Have you measured the size of your cutters?
Does the machine make multiple passes in the slot (to make it wider then the cutter)?
If you want a slot exactly the diameter of the cutter then you can use contour rather than pocket.
I am not a Nomad expert but they have the same basic electronics as a Shapeoko. Maybe you need to calibrate your machine. Basically you cut some circles and squares and measure them for accuracy. If they are off you can edit your stepper motor steps to fix the problem. It is likely something else but you should at least cut some circles and squares and make sure they are the size you make them and bigger or smaller. That will help separate an accuracy problem from mechanical/electrical.
The code reads correct for the #102 end mill. The software does not seem to be the problem. (usually never is) If you have not already, try removing your end mill and collet from your router, inspect and clean both the collet and router spindle bore. Use a Qtip with a bit of IPA for the spindle bore. Lets’ make sure there is no damage or debree causing run out. Maybe feel the spindle nose for any motion from a worn bearing. Then as @flynnjs said, make a single line cut and measure the slot to test for run out. Do this at precise location to you can check for location accuracy. If that’s good, try what @gdon_2003 is suggesting, a circle, diamond, square test. Again at a precise location.