Have you measured your accuracy yet? That ballscrew+nut combo produces a really funky inch per step number (0.001015625) I think turboCNC only supports 7 decimal places. So over 120 revolutions you'll be off .0006". Simple contouring should not be a problem but I wonder if a part that requires a "lot" of back and forth movement across each axis (like a large 3D part) would end up being a little goofy with the error being additive over the course of the run. (Again not a problem for something like sign/decorative work but might pose a problem when trying to do precision machining.)
I just wondered because that particular screw and nut are so much cheaper than the rest of the ballscrews in that category. I'm just wondering if the accuracy trade off is signifigant over time to not consider it.
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Nathan |