If I understand correctly, eKretz is suggesting that you mount something known to be straight/flat on the mill - either a surface plate or a straight edge. If I mounted a dti on the head and sweeped the table over a distance equal to the head using the powerfeed would it be a good indication of what I could expect.Īlso I am curious as to what I could use for a flycutter. Are you saying I could visually see what I can expect my mill to produce by seeing what the table reads on a clock guage in relation to the spindle. I also didnt quite understand what you are saying. I dont have any straight edge or flat surface. When I block things up i notice I am about 0.005mm out. 003" out in 24" or so - not too bad but not perfect.When I block things up i notice I am about 0.05mm out. If the indicator reads zero all the way across you have one very good condition milling machine. ![]() Watch what the indicator reads in the center and that will give you your best possible scenario for flatness. Just set it up on the table (surface plate) or the vise (straight edge) and shim or shift so the ends are zeroed out. ![]() ![]() If you have a small surface plate or even a known good straight-edge you can get a general idea of how close to flat the mill will cut. Flycutting is about as good as you're going to do on a little mill.
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