Sunlu FilaDryer S4 Fan Upgrade

The Sunlu FilaDryer S4 is a great filament dryer but the fans are extremely loud @ ~52 db from 1 foot away.

I recently replaced the 3x 6020 fans to 12v GDSTime 6015 fans which lowered the sound level to a more tolerable ~41 db, with no other noticeable changes in heating time.

Since the fans are 5mm thinner, I created a spacer which I printed in TPU. I can't see any reason why these spacers can't be printed in ABS or ASA.

I also provided a 6mm version if you want to omit the sticky foam tape that was attached to the previous fans.

NOTE: It appears the control board monitors the current being drawn by the fans. I previously replaced these with 24v fans and the FilaDryer would error out so you'll need to stick to 12v. 12v 6020 fans can also be used but I'm not sure how much louder these would be.