Hi all, recently finished and calibrated my CBeam XL and have made a few test pieces and parts in MDF. One test I did was to cut a 40mm square and a 40mm square hole to see how well the fit together. However they both seem to leave about .15mm on each edge so the square plugs is about .2-.3mm to big and the hole is about .2-.3mm too small. I don't think its calibration as I set and checked that over a 300mm jog. Also wouldn't that make hole AND plug either BOTH too large or BOTH too small?? So is it most likely to be a) Flex in the machine b) flex in the bit (6mm 2 flute straight) c) play/flex in the router (Dewalt 26200) d) bad maths in Fusion 360? I tried to also include a leave stock at .1mm and did a final contour cut to try and reduce the load on the final cut. This didn't help. So is this normal? and if so how do you work around it. I'm aiming to make guitar necks, bodies and templates etc. So a few 10ths on a hole is not too bad but I need to know fret slots will be as accurate as possible. Cavity holes and covers only need to be within .5mm so again should be fine for me to simply make the sizes larger than the error. Where I do need an accurate fit is neck heal into neck pocket. This should be a snug fit just tight enough so that you can lift the guitar by the neck and the body not fall off.