Bought this last year, made by a retired engineer to a fairly high standard. It is double acting so self starts nicely and runs very smoothly. I made the four column base for it and added the brass flywheel, I have it currently linked up to a spare Wilesco vertical boiler heated by a small 2 inch gas burner which is also a recent acquisition so a double test in progress for this first steaming:
Quite pleased with that
Dave