Update 8th July 18
Update because of mistake design. The copy I have printed in yellow and photographed does not match the uploaded files. The four holes in the support were too low. Consequently, the rollers rubbed on the horizontal part of the support.
Please download the current files if you plan to print it.
I am a little bit disappointed with the result. Rollers do not roll as well as ball bearings, of course. They get stuck sometimes, then leave. This does not prevent the spool from rotating because the extruder motor is powerful enough to counter the friction of the spool on the locked rollers.
I have printed three and I continue to use them without any concern for my impressions. But I have to be honest and warn you that this design is not working as well as I hoped.
Initial post 10th June 18
I needed a spool holder to replace an excellent model I had been using for a long time. One day, the filament was dammed, the extruder's motor pull on very hard. The filament resisted, it is a branch of the support that broke. I could not find the original model on thingiverse. So I decided to design one of the same kind myself but without any ball bearing.
3 STL are present here.
The main one called support.stl has to be printed once. You will need two copies of rouleau.stl and four of cheville.stl.
I used freecad for the design. I am not sure if i use the software properly. But I had a lot of fun. The project file is also provided.
I use Cura for the support. Coarse quality (0.4) for the main part and High quality for the others.