Ball Bearing Axle Shaft for PolyDryer
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A low-friction ball bearing axle for the Polymaker PolyDryer
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Accessories
- Licencja
- BSD License
This is a ball-bearing axle that fits in the Polymaker PolyDryer dry box to reduce the friction when feeding TPU and other sensitive filaments. I found that the cardboard spool on my Siraya Tech 85A TPU tended to hang up on both the center axle and the bottom rollers, causing too much friction for it to feed reliably in the Prusa XL.
This 3D-printed axle assembly uses standard 6904 bearings to present a very low friction rolling surface for the spool, allowing it to feed easily.
You will need to print the axle, the spacer, and two flanges.
When inserting the axle into the PolyDryer, be sure the notch engages the tab in the side so the axle sits down at the correct height. Due to the diameter of the bearings, it needs to sit lower than the stock axle.
6904-2RS Ball Bearings 20x37x9mm (Amazon): https://amzn.to/4cQTm7G
*This site contains affiliate links for which I may be compensated.
The axle is shown in this video: