I first designed the piece using Carbide Create software. I used a torch to heat up the brass on the shotgun shells. About 5 seconds on each and then using pliers I separated the plastic hulls from the Brass base. After cutting out the shapes on the CNC Router and a quick sanding I was ready to stain and varnish the pieces.
After the stain and varnish dried I used a little super glue and glued the brass in place. You can watch a video of the CNC process at https://youtu.be/pLI64mLEi8o A set of 4 shotgun coasters (not as nice as these) are going for $20.00 on Etsy so I think I may try to sell these. If anyone wants to try making their own just let me know and I will be happy to share the file with them.