Low profile/friction filament spool holder for wall

I couldn't find a simple, wall mounted filament spool holder to fit my needs, as most of the ones I tried were either too big, or hard to mount, or due to the print lines they caused a lot of dust with cardboard spools.

So, I modeled this one to use a piece of standard PVC pipe rolling on the printed part, for super smooth operation. 

Features

• Low profile to fit the common 1 Kg spool size
• Wall mounted with 2 screws to ensure horizontal alignment
• Smooth rolling thanks to the PVC pipe (reduces dust from cardboard spools)
• Easy to print, maintain and install

Assembly

• Print the two parts in the default orientation
• Cut a piece of 20mm inner diameter PVC pipe
• Slide the PVC pipe onto the support and use an appropriate sized screw to install the cap (the screw has to thread into the support)