Optional arms enabling many different PTFE tube mounting locations.
A Fusion 360 archive and STEP files are included for anyone wanting to create custom mounts.
All arms can be printed without supports if positioned on their side.
The stand has one location for a pass-through fitting. This works well for mounting the PTFE tube below the spool in the minimum space. The downside is that the spool must be removed to access the location where filament enters the PTFE tube during loading, unloading, and jams.
The extended arm maintains the low mounting location, but moves the filament entry point in front of the stand. The fitting should be installed parallel to the long axis of the arm.
The same arm can be used on the opposite side of the stand to enable a low 90° downward PTFE mount. This is best when the spools are placed directly above the MMU. The fitting is installed perpendicular to the long axis in this case.
If the spools are mounted above and behind the MMU, the 45° downward arm is the best choice.
The high mount places the PTFE tubes roughly at the level of the MMU when the spools are on the same surface as the printer.
The filament spool must turn in the same direction, regardless of the PTFE mounting location chosen. There are filament direction indicator marks on both the side of the stand and the end of the cap for clarity.
The stand has been labelled to show which arms can be used in the two mounting locations and still maintain the correct filament feed direction.
The arms are held in place by the weight of the spool and fasteners are not required.
If you want to mount the arm to the stand, use a 6-32 x 1” (or longer) screw and nut. The correct metric option is M4-20 (or longer).
- v1.1 posted to align with rewinder version