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Descrição
https://github.com/TheBrainlessEngineer/Marble-Safe/
or
for more info, and assembly process.
Parts needed (other than 3D-printed)
M3.5 x 16mm Screws x4 6.35 mm x 10.3 mm springs x4 608 2RS Wheel Bearing (8x22x7 mm) x4 (or more if you first have to get the fit right)
Parts that i used (no affiliate links, i dont get any money if you buy these or others)
https://www.amazon.de/gp/product/B088NY4MG6 https://www.amazon.de/gp/product/B08R65BKFT https://www.amazon.de/gp/product/B07N7QGXNZ (the parts are included in sets, so it would be waaaay smarter to buy them seperate i guess)