A trick I’ve been doing as part of my EDC magic is signed penny to key fob. The effect is a signed coin ends up permanently sealed inside of a “lucky coin” holder on your keychain. The nice thing about this is that it’s almost 100% self contained. I have everything I need to do the trick on my keychain, except a marker.

I’ve been using my original first design for a little bit and spent a little bit of time other day tweaking the design. The colors are just what was in the printer and have nothing to do with the design, besides making it easier to tell them apart.

The first redesign was good, the second was better and the third was a huge step backwards. I went back to the second redesign and it was the best of the three. That’s the great thing about 3D printing, it’s easy to tweak designs to get them where you want them!
-Louie