das filament master spool mod

If you're using filament from dasfilament.de and the empty spools are piling up already the following might be a great option for you! They also sell refill spools and you can easily modify their existing spools to accept those - no need to sink a couple hundred grams of filament into the original Masterspool design.

Just cut your existing spools in half (hack saw works perfectly fine) and print this adapter, it perfectly fits with 40mm x M6 screws from Bauhaus and corresponding nuts. The inner design allows lower friction due to only three lines of contact. I printed this compatible to IKEA PAX coat hanger rails which are 25mm OD but just go into the first sketch of the Fusion file and choose your required OD (+1mm clearance), the file is parametric and will adapt.

Hardware needed:
3 M6 x 40mm machine screws, head 10mm OD
3 M6 nuts