This was one of the first engines I
built, about 15 years ago. I used Sherline machines for
this one, and it's easily within those or Taig machines capacity.
made five of these, this
being the second one. I still have the first one too, but sold
the other three.
It's a single action engine, but with the nice large flywheel it will
still run down to about 50 rpm.
It will run on lung power if you're long winded enough, but a large
aquarium pump works best.
I built a small boiler that will run it too. Air is just less
muss and fuss.