I’m a first time purchaser of a CNC (but been woodworking for 15 years). I finished putting my Longmill together (30x30), and it was pretty straight forward. I used the 3 4 5 method to check the squareness of x and y and i’m within 1/32 over 20" (hypotenuse). I also trammed left to right by adjusting the router mount and I’m pretty dead on when using the ‘draw’ a circle with a bolt at the end of the stick just above the surface. However, I need to adjust front to back and for the life of me, short of trying to shim the router, I can’t figure it out. Also, because I’m dead on left to right, I’d really prefer not to adjust the router mount again as I’m afraid to mess up my left right tram.
Can anybody tell me how to do this?
Thank you very much