If you print a lot, the filament can become expensive. I recently found out that REAL has 5kg PETG spools that cost 50% less than the 'normal' 1kg spools. So I designed this big 5kg spool holder / dry box. It uses these skateboard bearings
2x holder.stl : print this with 100% infill for strength (5kg is some weight!)
2x adapter.stl : also print with 100% infill
2x rolspacer.stl : to make the REAL spool fit nicely on the 30mm alu pipe. If you want to use other spools you just design this for your specific spools.
Instructions:
Fit the nutserts in the holders.
Put the bearings on the adapter
Cut the alu pipe to 310 mm
Fit & glue the adapter (with mounted ball bearing) in the alu pipe.
Put 2x rolspacer over the alu pipe
Fit the whole assembly in the spool. I had to hammer the rolspacers a bit to fit snuggly
Fitting the spool inside the box is delicate. It only has approx 5mm spacing from bottom and top. Put some 5mm paper underneath the assembled spool (with pipe, rolspacer and adapter in the pipe mounted) inside the box. Put the holders on both sides in the box, they will remain because the pipe pushes the box walls a bit outside. Drill the mounting holes and fix with M3 screws
hixfield
