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warn about nylon BTUs, so that people don't waste money on them

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Filip Sondej 2024-09-10 14:15:43 +02:00 committed by GitHub
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hardware/Mechanicals-BTU-Mod/README.md
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@ -43,6 +43,8 @@ The particular BTU this mod is designed for is the Bosch-Rexroth R053010810, or
* [Rodivago](https://rodavigo.net/es/p/bola-transportadora-con-carter-de-metal-laminado-ref-053010810/557053010810) - Spain-based. May require being a company.
* For other sources, try Bosch-Rexroth's [contact locator tool](https://addresses.boschrexroth.com/) - find a distributor near you, and search for the bearing part number on their website.
(Some people consider buing cheaper nylon BTUs. But they have high internal friction and the ball actually slides on them like on a static bearing, which makes them pointless.)
## Printing
Follow [Ploopyco's recommendations for print settings](https://github.com/ploopyco/trackball/wiki/Appendix-B%3A-3D-printed-parts). It's also highly recommended to enable support interface and splitting the support into chunks, as otherwise it can be very hard to remove.