Bearing YoYo

youmagine

Inspired by an old yo-yo, this innovative design is all about printable parts - everything except the string can be printed. It features an advanced bearing style that allows for seamless assembly with the included M5-0.8 hex head bolt and nut, or any combination of real versions. Print Settings (printed on an UM2; PLA; 50C bed): Print the yo-yo halves as fast as your printer will go; 80% Infill is recommended. Print the core with extreme caution to prevent curling - slow down and print it cold at 100 micron if necessary; it's a challenging print, so be patient. Bolt and nut: print them quickly, but carefully, at 40 mm/s and 100 micron, and 190C temperature; 100% Infill ensures strength. A non-heated blue tape bed is preferred for printing, as it produces slightly rounded bottoms on the yo-yo halves - this reduces string friction potential. Important Information: Twist the two halves together carefully to achieve the perfect fit. Use a lock nut if you're using real hardware; the printable version stops short of the end, preventing the bolt from turning further. Avoid over-tightening the bolt, as it may crack the nut - a common mistake, but easily avoided. Apply petroleum jelly between the core and bolt interface for smooth movement. When using real bolts, sand down their threads by twisting them through some sandpaper; this prevents potential damage to the plastic. For a permanent device, glue a real lock nut and bolt into place. It's not recommended to glue the plastic bolt, as it may break if the yo-yo hits a hard surface at high speed.