Sunday, March 31, 2013

Engagement Ring Prototyping!

So a little over a year ago, my good friend Chris from Speed Shop Design asked me to prototype an engagement ring set he'd designed for his soon-to-be-wife. What an Honor!

I was put to work machining the set from 2024 aluminum to check for correct size, comfort, aesthetics and also as a practice piece for gem-setting. This was a very important step since the real ring set was to be cast from platinum.

After looking at the ring design for a while, I choose a simple machining method, the bridge...

In essence, a series of small "bridges" that connect the part geometry to the out portion of the material, then after the machining is complete, the part is removed from the block using a small coping saw.
Since both top and bottom of the ring design is symmetric, I only had to write one program and use it for both sides.
The set-up:

The first side:

The second side:

After finishing the machining, I sent the raw parts to Chris for finishing and practice setting using a CZ, turns out his design was spot-on.

Everyone was happy with the design and fit so off it went to be investment cast in platinum and hand set with a diamond.
Operation Engagement Ring: A Complete Success! 


  1. As huge an honor as it was for you to have had a part in the making of the engagement ring, I’m sure your friend also appreciated all the effort you put into it. We girls need to learn to appreciate rings for more than just the size of the rock on it. Thanks for sharing, Casey!

  2. Casey, Thanks to you I am now a happily married man ;)
    Seriously, I could not have done it without you! I rarely ever find a person with an eye and mind as sharp as yours and I appreciate it more than you know. I look forward to more collaborations with you and us making our first million together :D
    Miss you man!