TM reader GarethBell posted some pics of this awesome little compressed air/steam engine he built. He didn’t include a lot of other information in the Flickr pool, so I’m hoping he’ll stop by here and share some additional details. But from what I can see, this looks like it’s made from machined, anodized aluminum.
Besides the photo itself, he also included a small video of a similar engine actually running. Check it out, and let him know what you think in comments.
Compressed Air Engine [TM Flickr Pool]