72mm 608 bearing tube for filament spool
thingiverse
As straightforward as they come, I'm astonished this hasn't been uploaded to Thingiverse yet - and it definitely should be a customization option. A basic roller tube is all you need; simply insert a 608 bearing at either end and watch your filament or any other object glide smoothly.\r\n\r\nI used this with the filament spool brackets for the Printrbot Play (check out the file here: https://www.thingiverse.com/thing:1161647) and it performs beautifully. This design requires only 2 bearings, a significant improvement over the original 8 needed.
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