Here is my recently completed version of Stirling “Beamer” Engine from your fathers plans. Of course I always change a few thing to make it me. This was a fun but challenging project. I really enjoyed the challenge of the taper columns keeping the flutes the same depth from top to bottom. Required some creativeness. Below the two pics of my engine is a YouTube clip of its maiden test run. Runs beautifully.
Have a great weekend and a better 2020.
It looks great! Runs very nicely as well. Thanks for sharing!