Thanks, and I will keep that in mind. Normally on fusion 360’s CAM, I do a contour finish pass where under “Stock to Leave”, I put a negative value which actually does oversize on purpose. It’s a cnc router so tolerances are pretty loose. I am getting within .1mm which is great for my purposes. Very true about oversizing, it’s so easy to file fit vs trying to…idk shim the fit with something else.