ADJUSTING CUT DIMENSION SETTING

[Pete Cyr]

Good evening,
I'm puzzled as to the cause. To get a 1 inch by 1 inch square I must send 1.003x by 1.010y drawing. I know this may seem small, but as I've been a machinist this seems big to me. I can measure a tenth of a thousand accurately. Anyone seen this before? Or have an idea of where I might start to look. Thank you all very much.
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I have listed the steps to adjust the step length. A vernier caliper that will read in mm makes this process easier. (and you really need to enter dimensions using 2 decimal places 0.00 mm)
I prefer to cut a thin piece of wood 100mm x 100mm to ease the data input - if you cut a larger square you must correct the value entered into the block shown in the pic because it is really a percentage....so using a 100mm square removes the need for additional math.
If you perform this process 2 or 3 time you will find the accuracy gets better and then worse. That is a function of the machine trying to over correct for an accuracy that exceeds capability of the steppers/servos/belts etc. when you get to 99.94mm or there about I recommend calling it good(the error at that point is 0.0023" for those that use the old system-like me).
You might be able to get to 99.98. But with a beam size of 0.004 -0.006 you are not likely to see the difference.
Don't forget to READ and then WRITE

Adjust Cut Length to be = to design length.pdf