Making the engineering drawings is coming along, but some of the details difficult to nail down. Certain SolidWorks features (like SmartDimension and title block editing) are finicky and it takes some coercion before the program does what we want of it.
Another issue we're coming up against is tolerancing. It isn't always clear to us when to use what tolerances, so more reading/research into this subject is needed. We'll post more as we figure this out.
The good news is that our worm and worm gear is in the mail! The combo gives a 40:1 reduction. The supplier we used was SDP/SI and we'd definitely buy from them again. The prices were good (especially compared to McMaster) and there was plenty of variety. Here are some pictures to give an idea of the parts we ordered (our worm is steel, our gear is bronze):
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