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Low friction spool holder for Polydryer — image 1
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Low friction spool holder for Polydryer

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Polydryer bottom rollers have too much friction for TPU and full filament spools. This provides a solution

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Model information

Category
Accessories
License
Creative Commons — Public Domain

I frequently change filaments in my Polydryer. I store filaments with desiccant packets located in center spool hub in vacuum bags, and needed a larger diameter central spool holder that keeps the desiccant packets in place during use.  Small spool holders allow the packets to fall out during spool rotation.

This holder uses low cost, commonly available 608z bearings used in skate boards, etc. It results in very low friction when using TPU, full filament spools, etc. The end cap included here has a slot to fit the Polydryer center hole mounting point and raise the filament spool outer rim above the bottom bearing bars.  The end cap lever helps with orientation during loading. 

I recommend using ABS, ASA or similar high temperature filament because of the potentially high temperatures within the Polydryer.

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