I present the Ring XX; designed to hold two 2x6mm tritium vials (not included) in the two slots across the ring's face.
This model has been designed for printing in stainless steel, or one of it's variants.
The sizing of this ring model is 17.3mm internal diameter, a UK O (US 7).
The design can be scaled up indefinitely and down to a US 7, before needing major changes, like loosing a vial.
If you would like a specific size then please send me a message or post the request below.
The tritium vials should be set using a UV activated optically clear adhesive such as Norland 61 or Loctite glass bond. These adhesives will cure in direct sunlight in an hour or so.
This ring is just one of many Tritium Ring designs I have created. The rendered pictures show the various rings that I can make available. As well as selling the ring bodies on Shapeways, I can also offer fully assembled tritium rings, with the full range of vial colour options (green, yellow, orange, red, purple, deep blue, ice blue and white), set using Norland adhesive. So please contact me if any of the other designs take your fancy, or you would like an assembled ring.
There are some more photos of this object and other examples of my work, both 3D printed and otherwise, on my 'Tofty' facebook page.