Love Prusament? Got a bunch of empty Prusament spools gathering dust because you feel bad about throwing them away? Then this print is for you!
Upcycle your empty Prusament spools into MasterSpool compatible spools that can accept filament refill. No longer do you need to feel bad about the waste caused by spools!
CAUTION: The model relies on a strong press-fit onto the Prusament spool, you may want to test print a 1 cm tall section of the outer ridge of the (F) part to check that the fit will be good before printing all the parts.
I recommend using the .3mf files that have the print settings tuned for a strong and fast print. Just open in Prusa Slicer, adjust material/printer profile and slice!
So you want to set up the print yourself? I don't blame you. In that case you should be aware that there's a fair amound of mechanical advantage causing high stress in some areas when gripping the spool on the outside rim and twisting the halves close.
In the picture to the left you'll see a cross-section of both the (F) and the (M) part when screwed together. The area marked in blue should be solid material as it will transfer all the rotational forces from opening and closing the spool. The outside most rings hold all the radial forces from the pressfit onto the spool, and must definitely be solid.
The upper yellow area is only decorative and can have sparse infill and few perimeters as long as the blue area is solid.
The threaded sections should have 3 perimeters and should be printed with 0.15 mm layer height. Thicker layer heights, especially when using PETG will make the threads not come out cleanly and may make it hard to open and close the spool. On other parts of the spool, the layer height doesn't matter.
I recommend ironing the mating surface of the (M) half, and printing the (F) half with the mating surface towards the print bed to make them close tightly and not risk anything getting stuck.
This model is different from: https://www.printables.com/model/431304-simple-prusament-to-masterspool-adapter in it is a threaded design that is easier to open and close for loading the refill spool.
This model is different from https://www.printables.com/model/413374-prusament-spool-adapter-for-reusable-spool in that no additional hardware is needed and there's no risk of the spool coming apart if the magnets aren't strong enough.
The author marked this model as their own original creation.