I'm not teaching the "Industrial Geek"™ class right now but if you'd like to make one yourself you can book a private online class with me! Email me for details.
If you have some resin skills and want to make something similiar, I have all the supplies you need in the Saints and Sinners Etsy Shop!!!
I have Brass Hobnail Bezels in a nice big size, same as I used in the Industrial Geek™ necklaces.
I also carry 2 part epoxy resin to fill up your bezel.
And I have tons of great industrial,and steampunk goodies lots and supplies. Check out this lot, it's chock full of steamy goodness!
In fact, I have an entire section just for things from my Steampunk Trunk!