Thanks!
For my first builds, I tried to find engines that could be made without castings and that were fairly simple to make on the lathe an small milling machine.
I think the potty mill and this simple beam engine both fulfill these requirements. There are loads more and maybe even simpler ones like the wobbler type engines, but I wanted to have the experience of making the typical steam engine components like the steam chest, slide valve or rotary valve and so on...
Cheers,
Filip