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by paulbelcher, published

This name is under moderation due to a Notice of Claimed Infringement by paulbelcher Jan 31, 2013

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-------------- Feb. 6th, 2013-------------------

  • Small update*

Solidworks sldprt files have been uploaded for your pleasure. These have not been modified at all and reflect the stl files published earlier. Please, please keep in mind that I'm fairly new at Solidworks, and this was one of the first projects I undertook as a new user. There may be a million better ways to model these parts, but I made do with what I knew at the time. If I modify these sldprt files, I will re-upload. If you modify them and feel your design works more efficiently than this one, would you please be so kind as to send me the sldprt files you created? Just to satisfy my own curiousity - i always like to see other way of doing things - I think that makes me a better designer. My email is [email protected]

Thank you!


This is my version of the Kinekt Gear Ring. This was a project I did for a class at Kishwaukee College, and I think it turned out pretty decent. It doesn't go together very easily, but as you can see from the picture, it does actually go together. I'm still working on this, and any suggestions would be very helpful. I'm not an engineer, so the tolerances are not great, please forgive me...
These files may be updated soon, as I continue to clean up the design.
The picture shown here is a real quick shot and doesn't show the gears cleaned up yet. I took an Xacto blade and carefully trimmed off the flash left over from the printing and now the gear profiles are smoother and turn much better once assembled.
This was a lot of fun or me to draw, I hope anyone who has a chance to print this gets theirs to work as well as mine now does. After use, it gets easier to spin - I think some petroleum jelly might help too with the assembly and to keep everything spinning smoothly.
If anyone's interested, here MODERATION
is a link to a youtube video I did of a similar design. this version used screws to hold the gears in place, rather than the snap in gears that evolved after some trial and error in real life. I just couldn't get the screws to print good enough at the small scale required...
Thanks for looking, sorry for the long description!



Print 6 of the gear wheels, 2 of the gear meshes and 1 each of the ring top and bottom.Put gear meshes in place, snap gears into the holesand squeeze together the top and bottom ring halves.
I'm still perfecting this, so please be gentle with me if yours doesn't go together perfectly... I used a uPrint SE+ printer to print my version.
Once I get the Solidworks files to my liking, I will go ahead and upload those too, just so anyone can have the files I worked so hard at. Right now, I'd like to keep them to myself, as I'm wary of the criticism that might (rightly) come with showing my work haha....

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Darn, as soon as it was updated it's been blocked due to infringement :(

To everyone who has tried unsuccessfully to print this, I sincerely apologize. It appears that I uploaded a different version that what I have shown as printed, due to my inability to manage files. Also, I had a USB drive go south on me, so I will need to find somewhere else that I might've stashed these original files to get the right files uploaded. I've got a full load this semester, but I will try to get the good, working files up as soon as I possibly can... in the meantime, feel free to download these slightly-off Solidworks files and see if you can get them to work for you - after all half the satisfaction is doing the hard work yourself, right?
Again, I'm sorry if I've caused anyone to waste expensive material - I didn't do it on purpose!

Ok got one together and it does turn - sort of. Problems

1) Ring_gear_mesh teeth do not all appear uniform. Should also be more tapered

2)Ring_gear_wheel. Same issue.

To get it to print I had to manipulate most of the files in some way. Can post if necessary

Thank you for your feedback! I will see what I can do about getting the teeth more uniform and tapered. I will post the solidworks files on Wednesday, Feb. 6th, as I forgot to bring the USB drive with them on it with me to school today.

For me, the gear wheels do snap into the holes, sorry that they don't for you. For information, I use a uPrint SE+ printer, with the CadalystEX 4.1 front end as supplied by the printer manufacturer processing the stl files and managing the print settings. The print setting are: resolution - 0.0100", support material set to "smart", and model material set to "solid".

Thanks again for trying this out - it's cool to see all the feedback this hair-pulling little project has gotten, and I plan continue to massage the pieces to work better and better.

Ok managed to get a couple of gears to print by flipping them so that one of the flat sides is down and then printing with support. I cant help feeling, looking at the pictures, that there is a support structure on those gears that we do not have in the stl.

I am saying it is a different model all together. It has a step in this STL where in the printed example it is solid NO STEP on the gear rings. Sad I am gonna stop wasting plastic now, wait for new version. (:

My printer front end is CadalystEX 4.1, and it figures out the support material needed when processing the stl files. I'm not sure exactly how other printers manage the support, so I'm sorry, but I can't help you out there...

I'm sure he just turn on the automatic support that the slicer creates.

The "curve" I'm talking about is if you look at the 3d model, the wheel's gear part is curved, like a melted gear in a Dali painting. The wheel will lay nicely along the ring in one position, and as the gear turns the curved gear will try to dig into the ring.

Hrmm.I would expect to see the support at the edges rather than the center of the gear then. The gear itself sits out from the ring some way so the digging in issue is not going to be an issue. I believe the curve is in place to make sure there are no hard angles sticking out.

That's exactly right about the curved gears - I tried to make this look as much like the commercial version of the ring as possible. If it turns out that I need to adjust the gear wheels and make the curve less pronounced, then I will try that. Cyclone's post above is also correct in that I use the automatic support feature of my printer.

A comment on the wheels, the toothed portion is curved, to lay nicely on the ring but doesn't cause part of your turning/meshing problem? Seems like the gears should be flat, would also make them easier to print.

The gear wouldnt wrap slightly around the ring if it wasnt bent though would it?

I am still working on it, I promise! I'll post the solidworks files for everyone on Wednesday, Feb. 6th so that you people who are better at this than me can work your magic :-)

Nice one :) Ill be waiting.

That's so funny - I was JUST searching Thigniverse for such a ring! When I started searching there was nothing there except the gear bracelet ( http://www.thingiverse.com/thing:13263http://www.thingiverse.com/thi... )and a few minutes after, I saw this! Very cool - do you have a video of it working?

Gear Bracelet

I'll make a video of it as soon as I get my new phone - hopefully tomorrow. Sorry, but the video camera on my current phone bit the dust and only outputs videos of jiggy jagged colred static-y blocks. While interesting to watch, doesn't do any justice to the ring lol.