July 30 2023: Fixed issue with one of the holes on the left side mount.

June 14 2023: Thickened the part by 2.5mm. I suggest extra walls and infill to help combat droop.

Mounts for the original metal spool holder that fit onto either side of the bare P1P frame.

Note: The left and right mount points are slightly different - the mounts are not interchangeable.

Requires a couple of M3 nuts.

The only support needed is around the recessed hole on the flat side. For that simply use paint-on supports like so:

The left mount does not have a lip at the bottom to hold onto the frame as the auxiliary part cooling fan is in the way, so I use the extra VHB tape that came with the early bird bonuses to help prevent the mount from being lifted off of the printer by accident. I ended up liking the VHB tape on the left mount so I use it on the right mount as well:

VHB tape is optional on the right side but you may find that the mount sticks out from the frame by 1mm at the bottom before catching the lip. This shouldn't be a problem but I suggest putting something else there to fill that space in case the gap causes vibrations and noise while printing. If desired I can add a variant of the right mount that fits more snugly without VHB tape.

Feel free to copy and tweak the original models on onshape (onshape is web-based and free!). Click here for my onshape workspace with the original models.
Click here for onshape's free plan.