Remix of the 2x scaled Version of the ultimat gear sphere.
printed in laywood and laybrick. core in abs.
files are modified to work with DIN 912 Screws Size: M6x20mm
the core is hollowed by a 40mm sphere wich saves around 2m filament and 30min printing
time for me...
32x M6x20mm Screws
complete parts print time in my case: ~11hours
the holes for the screws have 6.3mm at the M6 part and 11mm for the head of the screw.
50% (0.5 in slic3r) should give you 3,15 and 5,5mm. M3 Screw is 2,9 and 5,4mm -> should fit, but could get a bit tight at the head of the screw...
83,33% (0.833) for M5
66,66% (0.666) for M4
or if you can´t get enough
133% (1.333) for M8