Mini Iron Man Arc Reactor

This was a costume prop my brother and I made for our nephew Carter.

It was nothing special: we just soldered a ring of white LED lights into a transparent 3D-printed ring and powered it all with a couple of coin cells. Somehow, we missed an LED and couldn’t get it working. Since we welded the LEDs between the ABS-printed parts, we would have had to destroy it and start over to try to fix it.

I wish I had taken more pictures earlier in the build.