Summary

This project has been has been discontinued as I found that too often the spool would not roll as expected but in stead get stuck. In stead I designed something to hang on the back of the shelf I have above: https://www.tinkercad.com/things/8Qim0OXogrM?sharecode=c5w_8dJv8uNpeg41WsMEwVw5IvLs3VbjeYvqg6mRf-o

I originally made to 'ears' for my Sculpto Plus: https://www.thingiverse.com/thing:3183535 but when I received my Sculpto PRO 2 it was 4 cm taller and the spools would not fit between the handle and the shelf above.

Actually it would not even fit a full spool on top of the handle, so that made it a little challenging.

This 'handle roller' is put on top of the handle, to turn it into a filament spool holder.

The spool is turned as much as it is possible to still allow a (new as of end 2019) 500 g spool to be able to span the handle.

WORK IN PROGRESS -> NOT WORKING

A rod is put through a hole on each side. LEGO crossbars work great!

On the side closet to where the filament goes in, you need to add something for the filament to run over as the filament spool will otherwise not be able to turn. The point the filament is pulled over must be above the middle of the spool and preferably above the top of the filament. I build something out of LEGO, but I intend to make a printable replacement.

An alternative option would be to make it very easy for the spool to rotate.