Thanks for checking out my first Instructable :) This is a 3D-printed bracelet design that comes in a few different sizes for various wrists. I've been calling it the Rotator Cuff. Here's a short video to give you an overview of the design and show how it works.

Making the bracelet on your 3D printer is fairly straightforward and listed below is a table of contents for the steps involved, along with materials and tools required for each step. The first step in bold is required for proper function of your bracelet, the second step is only needed if your bracelet isn't functioning properly after printing, and the remaining steps are for those who might want to change and customize the design as they please using Solidworks CAD software.

1. Measuring your wrist and choosing the appropriate sized STL file for printing.
- 3D printer with an X/Y direction tolerance of at least .015 inch (.38mm), preferably .010inch (.25mm)
- Piece of string at least 8 inches (200mm) long
- Ruler

2. Cleaning up the bracelet for proper function (only needed if it's not working well after being printed)
- Small hobby knife (Exacto blade) or small file.
3. Customizing and changing the Solidworks CAD files.
- Solidworks 2012 or 2013 CAD software.
4. Changing the bracelet size and number of rings.
- Solidworks 2012 or 2013 CAD software.
5. Changing the height of the rings.
- Solidworks 2012 or 2013 CAD software.

Step 1: Sizing and printing your bracelet

This step shows you how to measure your wrist and choose the correct size Rotator Cuff bracelet for printing on your 3D printer.

You'll need:
- A piece of string about 10 inches long
- Ruler

Here's a video that shows you how to measure your wrist with the string and ruler:

After measuring your wrist as shown in the video choose the appropriate bracelet size from the list below, then download the STL file for your size and print the bracelet. The sizing doesn't need to be exact because you can always move the bracelet forward or backwards on your wrist to achieve a better fit. If the first bracelet you print doesn't quite fit then try a size up or down until you get one that works well for you.

Wrist measurement Bracelet Size
4.5 - 5.0 inch (114 - 125mm) XXS
5.0 - 5.5 inch (125 - 140mm) XS
5.5 - 6.0 inch (140 - 153mm) Small
6.0 - 6.5 inch (153 - 165mm) Medium
6.5 - 7.0 inch (165 - 178mm) Large
7.0 - 7.5 inch (178 - 190mm) XL
7.5 - 8.0 inch (190 - 203mm) XXL
8.0 - 8.5 inch (203 - 215mm) XXXL
8.5 - 9.0 inch (215 - 228mm) XXXXL

I would love to buy one here's my email Candrjeski@gmail.com please email me. I would love to talk more about this and pricing on it. This is really awesome!!! <br> <br> Thanks <br> <br>Connor Andrjeski
I will buy one too!!
Thanks Connor, If I end up selling them I will let you know.
I'm seeing a nice way to organize all the wires behind my computer. Perhaps even to contain my climbing rope. Great concept.
OK DC Comic fans. I smell a Wonder Women movie prop. Or Captain Marvel !!!!
Can I have a pink one please?
If I end up selling them I'll try to make them in pink.
god job brother!!
thanks :)
Very cool. Does it rip arm hair out when you take it off?
As someone with an abundance of arm hair I can say with confidence that it does not.
You must sell these! I totally wanted one as soon as I saw it, even more so after seeing the cool action in the video.
Thanks :) I'm considering putting it on Shapeways or Kickstarter so people can buy them if they don't own a 3D printer.
Please do! I would definitely be happy to buy them from Shapeways.
Wow, thanks :) If you end up making any I'd love to see them so shoot me a link or photo if you're up to it.
This is a wonderful idea! Looking at especially the white one (but any color could be worked with just the same) My brain is literally spewing out all sorts of girl and guy grunge design ideas for these as well as more girly designs away from grunge and even like boy surf designs. I could totally amp these up! Great idea! Love it!

About This Instructable


299 favorites


Bio: Engineer by day and creataholic by night
More by EricYoung: Rotator Cuff Bracelet
Add instructable to: