Spool Filament Dryer - Desiccant Holder

Update

All new design here ....

Features:

• Presses into the center of a spool and is held in with spring like features that are built in. 

• The cap snaps on.

• Designed to fit 1 on each end of a standard 1kg spool.

• The through diameter is made to clarence up to a 1/2" shaft (12.7mm).

• Fits well in 50mm to 52mm inside diameters.

• The funnel is designed to plug the center through hole and allow control over where you are adding desiccant.

• Fitment confirmed with Prusa spools and the Polymaker spool adapters such as my remix.

Print Recommendations (general):

• Print with PETG or PCTG for strength and flexibility of the springs. In my tests the "fingers" broke due to the lack of flexibility in PLA with this design.

• No supports needed

• Examples printed with standard Prusa slicer settings for 3D-Fuel PCTG

Funnel Recommendations:

• Example printed in file direction with brim and support. Brim is a must in this direction

• Brim was 1 layer x 5mm wide.

• I have tried printing with the bowl side down and no supports but it does not come out very smooth on the funnel/bowl side. This is why I printed bowl side up with supports. 

• Slicer pics shown for brim and support example.

WIP: As of 5/16/26

• Add lip to the funnel to help mitigate spillage

• Modify the "fingers" to allow a larger range of fitment

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Products:

• Polymaker Polydryer

• Prusa CoreOne

• PrusaCore One +

• PrusaCore One+ Ultimate

• Prusa MK4

• Prusament PLA

Disclaimer:

• Links may take you to Amazon.com or Prusa.com for products I endorse and use on a regular basis.

• JD3D is not responsible for any damage or harm caused by improper production, assembly and use.