CupCake CNC build, part 5: Pulley & enclosure finishing

December 5, 2009

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It’s been a while since my last build journal, mostly because the finish takes a few days to apply, and yet another few days to fully cure. I’m just happy it’s now done! I want to start building… and printing!

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First up, assembling the pulleys. If you purchased a kit, it includes a set of 3D-printed pulleys. This makes the pulleys really easy to assemble. However, there are a few tips and tricks that I’ll cover.

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First, make sure there are no extra bits of plastic in the pulley opening. If there are, carefully scrape them off with a hobby knife. Next, use one of the screws from the hardware burrito, along with a nut, to help push the bearing into the pulley. Screw the nut onto the bolt about 1/4″ and then press the bolt head firmly until the bearing is completely seated. It’s a snug fit, but you should be able to press it in fairly easily.

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That’s it! All the pulleys are assembled. If you are making your own pulleys from laser cut parts, check out this guide. Now it’s time to apply a finish to your enclosure.

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