Another Sunlu S1 Filament Dryer Fan Mod

Used jdobry's fan from Thingiverse, but added a few custom pieces to it to improve circulation and hygrometer.
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updated September 23, 2024

Description

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Thanks to jdobry and Buszmen61 over at Thingiverse for the inspiration for the great Sunlu S1 mods. sunlu FilaDryer S1 Fan by jdobry - Thingiverse.  Sunlu & eSUN filament drybox - holders for hygrometer without drilling by Buszmen61 - Thingiverse

PRINT

  • PETG, ABS or ASA.  Not PLA (it will melt)
  • .20mm layer height
  • 3 layers recommended
  • Print 1 of each of the following:
    • Original Direct Fan (wiring instructions on jdobry's link above)
    • Rear Ramp, with or without Mount Slot (use factory screws)
      • One of the Hygro mounts, if you need a rear Hygrometer.

WHAT I MADE

I started with the fan from jdobry and created a ramp to direct air flow around the filament spool. It uses the stock screws from the rear plate. I originally had the S1 facing the back and wanted the hygrometer to be visible, but didn't want to interrupt airflow, so I then made the Ramp with Mount for the Hygrometer mount made by Buszmen61. It worked okay, but was a bit too high.  Plus, I printed it in PLA, so it started warping pretty quick. So, I modified it to sit lower and a bit away from the ramp, to allow air to circulate freely, and recommend PETG.

I included the STL for the fan for easy access.  For wiring instructions, I encourage you to hit jdobry's link above and give him a like. Of the designs I saw, this was my favorite. I didn't screw the fan to the lid. I used a single strip of double sided tape and it has been working great for a couple weeks now… almost non-stop.  Use a 4010 axial fan, soldered to the power wires.  I put a 40C Thermal switch in-line. When chamber temp hits 40, it turns on and circulates the air.  When heater turns off, fan keeps circulating air until temp drops below 40. From what I read, this improves efficiency by like 3 times.  

If you have questions, send me a message.  I can provide more info.  I am no longer using the rear hygrometer, which is why I made the smooth ramp. I am using the front PETG anchor with hygro I also have posted.

Tags



Model origin

The author remixed this model.

Differences of the remix compared to the original

Customized the holder to fit in the ramp or mount to the front of the S1. 

License