BenJackson wrote:I engraved a ruler along Y and there's a periodicity to the error that's close to the ~36mm pulley diameter. Also, the periodic error is about 0.5mm which is very close to the expected worst-case error from a 0.25" pulley mounted on a 0.2175" (1/4 20 major diameter) shaft -- about 0.8mm.
I suppose I should re-do the tests I did with 10mm and 20mm shapes using 36.576mm (1 pulley diameter) and half of that. Error should be minimized for the 36mm and maximized at 18mm. In fact, checking my notes on the test cuts I did before, the maximum error occurred in the 20mm Y axis cuts, which is close to the 18mm worst case.
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