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Definitely not competitive with an experienced operator on a real IBM 029 keypunch machine
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I’ve concluded that the MBI stepper motors aren’t appropriate for the Thing-O-Matic
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This motor has six active terminals, so it could run in either unipolar or bipolar mode.
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The TOM now traverses reliably up to about 90 mm/s.
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It may work out better to assemble large objects from thinner parts.
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Just lower the motor a little bit, flip the pulley over to put the setscrews on the top, and it’ll work.
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Always test your brakes
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The digital caliper on my desk has been getting a lot of use lately and, as expected, that delicate glued repair failed.
The Smell of Molten Projects in the Morning 