{"data":{"make":{"id":"1797300","created":"2024-05-18T23:43:45.047614+00:00","edited":null,"deleted":null,"isMake":true,"printer":{"id":"549","name":"Creality Ender 3 Max Neo","__typename":"PrinterTypeType"},"parent":null,"author":{"id":"332138","handle":"MauroParodi_332138","verified":false,"dateVerified":null,"publicUsername":"Mauro Parodi","avatarFilePath":"media/auth/c06b6ec3-2237-4a9e-b03b-53f670846253.png","badgesProfileLevel":{"profileLevel":5,"__typename":"BadgesProfileLevelType"},"__typename":"UserType"},"images":[{"id":"1627321","filePath":"media/comment_images/b7/6ac468-4559-49d9-8286-70230a3f7d43/img-20240518-wa0016.jpg","rotation":0,"__typename":"CommentImageType"}],"mentions":[],"text":"","rating":5,"likesCount":0,"liked":null,"membershipAgeMonths":null,"modelData":{"model":{"id":"697841","ratingAvg":"5.0000000000","ratingCount":2,"__typename":"PrintType"},"__typename":"ModelDataType"},"membershipTier":null,"__typename":"PrintCommentType","model":{"id":"697841","slug":"gear-ring-a-working-model","name":"Gear Ring - A working model","authorship":"author","club":false,"excludeCommercialUsage":false,"price":null,"eduProject":null,"ratingAvg":"5.0000000000","myRating":null,"ratingCount":2,"description":"

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 versions

BOM

1x - Gear ring main body with the outer rings

6x - Gears

6x - Studs

PLA or any kind of plastic cement. Slow curing is highly recommended.

Assembly

Very carefully and remove the organic/tree supports from the main body
Lay out all the parts as shown in photo
Ensure 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 out
Move the outer rings on the main body to the outer edge as shown in photo
Test fit the stud through the gear and into the main body
Apply very small amount of cement to the recessed hole in the main body
Install 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 cure
Very gently test rotate the outer rings.
Install the remaining gears.

Moving parts have a 0.4mm tolerance

Fixed parts have a 0.2mm tolerance

This 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 :)

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Gear Ring - A working model

Gear Ring - A working model

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