The outer radius is about 2.95 in (75 mm). The average bangle bracelet size is between 2.3-2.5 in. I left room for you to make some minor sizing adjustments.
This was a relatively quick design. I made a twisted torus first. I scaled the torus up and applied a mosaic pattern. I then inset by polygon and deleted the faces leaving a frame. I shelled it and applied a turbo-smooth to create the voronoi appearance. It took me about 30 minutes of trial and error before settling on this design. Rendering the three pictures took about an hour.
I am Daniel O'Connell, a Maker from Philadelphia. My philosophy is that every model must be as useful as it is beautiful.
I will be adding many more products in the coming weeks. As always, all of my designs are free to download and print. The products I sell can be downloaded from my designs page.