Delrin is so much less drama than aluminum. I needed a half inch length of reduction. Some years ago, under threw illusion that these might have commercial value, I printed some scales to fit on the bed under the carriage. It is obviously not high enough precision for serious machining, but it tells you roughly where to start counting the rotations carefully. For casual work like this, good enough.
Good work. I started a home machining job by counting the revolutions of the handwheels, but that went south quickly and the mill now wears inexpensive DROs.
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