Made in Gratkit PETG Blue (230C nozzle, 80C bed, 75mm/s print speed)
0.2mm layer height, standard supports, used a brim to prevent warp due to the chunky section.
The author remixed this model.
I like the tool holder designed by Hector, but I also wanted a filament roller guide for side positioning of the spool, thereby deleting the overhanging mass of the stock spool holder.
Taking Hector's design I've added a rolling element and filament guide. The roller uses a standard skateboard, 608ZZ bearing. The only additional part is a trim screw repurposed from a vehicle I broke for parts many years ago.
The outer filament retainer part was to stop to filament popping out forwards, so rather than printing out a complete redesign, which would have been neater and saved a part, I added this small piece. The benefit is that it's self spring loaded, so removing filament off the roller is easy, without having the thread it back through.
Design was done in Onshape.