Gear Ring - A working model

prusaprinters

This is a design exercise to reverse engineer a commercially available Gear Ring into a fully 3D printed working model. UPDATE - added 23mm and 19mm versionsBOM1x - Gear ring main body with the outer rings6x - Gears6x - StudsPLA or any kind of plastic cement. Slow curing is highly recommended. AssemblyVery carefully and remove the organic/tree supports from the main bodyLay out all the parts as shown in photoEnsure all the gears are oriented correctly and ready to be installed.Test fit the stud through the gear and correctly installed would look like photo shown with the stud protruding outMove the outer rings on the main body to the outer edge as shown in photoTest fit the stud through the gear and into the main bodyApply very small amount of cement to the recessed hole in the main bodyInstall the stud through the gear and into the main body as shown in photo.Once this first gear is set. install another gear on the opposite side of the main body as shown in photo. Once again allow the cement to cureVery gently test rotate the outer rings.Install the remaining gears.Moving parts have a 0.4mm toleranceFixed parts have a 0.2mm toleranceThis is a working model more than an actual EDC fidget ring.  Don't rotate too fast or apply too much force while rotating the gears.Happy New Year!! and Happy Printing :)