Nam châm gắn trần Prusa USS Drybox cho Enclosure

After going for MK4S upgrade and USS Dryboxes I couldn't find any convenient way to use the drybox directly inside my original Prusa enclosure (with external display). Some remixes of the universal puck with the original spool arm did not give enough clearance and/or convenient filament exit orientation.

The solution proposed is to add a neodymium magnet in the base of the puck to freely hang the drybox inside the enclosure, having thus sufficient clearing in any direction in order to avoid collision with the big shroud fan of the MK4S and to facilitate any loading/setup using the original bowden tube (no cut, no junction...).

Bill of materials.

• neodymium magnet, i use a d25mmxh8mm given for 20kg, like this one, adapt openscad source file if different.

• flat head philips M5x20 bolt and M5 nyloc nut, adapt according to your magnet and change openscad source file if different. The bolt provided with mine was a bit too short (15mm) not allowing a sufficient width between the magnet base and the nut.

Printing setup.

Used [email protected] structural with default options (15% infill) and support.

Setup.

• un-mount the original spool arm and holder.

• un-mount and disassemble the original filament guide then release the boden tube from the guide and all zip ties.

Additional needed printed parts.

• Prusa Universal-spoolholder-1kg-R1.stl from Universal Spoolholder (1 kg) files.

Recommended printed parts.

• simple and efficient Prusa PTFE-Stopper.stl on the bowden tube drybox side from PTFE Add-ons files.

Enjoy (i hope).

The original length of the bowden tube and the top ceiling right position allow free movement of the tube for any position of the printing head (as in picture).

Feel free to modify the included openscad source file with your custom magnet dimension or others. Dimensions are set in variables, so it should not be complicated to tweak some.