Relocating Filament  

RE: Relocating Filament

Put your spools on bearings and it'll be fine.  Been printing with mine like that since day 1.

If you use Bowden tubes I recommend the 4mm of 3mm id tubes.

RE: Relocating Filament

Thanks. The spools are on rollers, although not bearings and i was thinking of adding tubes. Putting fittings in the top of the dryer is easy but i didn’t know if there were fittings on the Prusa already.

RE:

If you go on printables you can print the piece that is used when you put it in a Prusa enclosure.  Then you can put a fitting on it.

https://www.printables.com/model/251931-enclosure-printable-parts

RE: Relocating Filament

Edit*. I forgot that on the MK4 you don't need to print anything.  The Nextruder frame already has a threaded hole on top for a QSM-M5 fitting.  So all you need to do is buy one. 

RE: Relocating Filament

Moving the filament to a dry box is a solid idea to prevent moisture issues. I recommend using low-friction PTFE tubing (ID 2mm / OD 4mm) to reduce drag and ensure smooth feeding. Mounting the spool on a bearing roller can also help minimize resistance. If you run into tension issues, try increasing extruder tension or optimizing the PTFE tube length and routing. Looking forward to your results.

RE: Relocating Filament

I would suggest getting PTFE tubing with ID >2mm to further reduce friction.

RE: Relocating Filament

RE: Relocating Filament

Not sure what happened to the text but, using the spool holder is temporary until I can design and print something lower with a nice curve to it. 

RE: Relocating Filament

You could start with just mounting the filament guide lower on the holder.

RE: Relocating Filament

When deciding how to constrain the movement of the reverse bowden tube above the printer, remember to evaluate how the tube needs to move or has slack when reaching both sides of the x travel at both minimum and maximum z height.