Sunlu S4 Bowden tube manager (internal)
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Internal Bowden tube management for SUNLU S4 for easy spool insertion
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Updated at source:
Model information
- Source
- Printables
- Category
- Accessories
- License
- Creative Commons — Attribution — Noncommercial — NoDerivatives
6/3/2025 - adding second version (V2) to lessen the chance of interference with “full spools”
I moved all of my “outlets” on the SUNLU S4 to one end to shorten bowden tube paths. I added pneumatic bulkhead couplers at one end so that I have 4 filament exits at one end of the dryer. I used these:
https://a.co/d/iAa6LRu
You will need some M2 screws to mount this. I used a 1.8mm drill bit to drill into the “cross bar” on the dryer and some M2 x 8mm screws to mount this. Just push the bowden tubes through this and trim to fit!
I printed out of ASA due to the increased temps that can be found in the dryer