Perfectly set up with pro edge spindle tram guage .
It has to be right – or it’s not right 🙂
CNC router spindle tramming is critical for fine pocket finishes and non tapered edges on your jobs.
this is my method which is a lot faster. screw down some MDF and fine skim a pocket as a reference surface. i use a 5mm bit with 1mm stepover. this will give a nice clean reference surface datum to your x and y axis rails.
set both guages to zero with the spindle in the middle of this pocket. now rotate spindle to read the difference. first check the vertical surface parallel to the rails and shim accordingly. then spin the guages 90 degrees to confirm the other axis. re check once everything is tightened down.
This can be done when we service your machine for you . See https://cncrouter.uk/services.htm

source