I’m a new owner of a Nomad 883 and relatively new to CNC milling so I hope the community can help answer what I hope is a simple question.
After an initial failed attempt at milling a flip-slide print (~ 0.5 mm misalignment on one axis, less than 0.1 on the other) , the finished piece suggested a slight misalignment. While I’m not using the low profile jig, I did use pilot holes drilled into the MDF. I therefore removed the MDF bed and took measurements at 1mm in from each of the rapid movement points (1-13 (except 7) below).
I have about a 0.2 mm difference between corners (3) and (11). There also seems to be a slight tilt downwards toward edge 1-6-11. An answer to another forum post suggests that it’s not possible to adjust the height of the bed so I’d appreciate some input on:
Q. What’s the expected tolerance of the bed. 0.2mm seems a little high to me? Is this normal? Q. While I’m sure the bed is completely flat, I suspect the misalignment was introduced when attaching the rails. What’s the recommended way to tweak this? Placing a piece of paper or a shim under the low sections? I can of course mill the mdf board and that solves the problem to some degree, but I have the threaded bed so need a solution that will work for that too.
Thanks in advance for your help.
1 2 3
6 7 8
11 12 13