A Turntable for the Triple Expansion Engine.
I have not weighed the Bolton 9 triple expansion steam engine, but I would guess that it is 20-25lb. (weighed it. 25.5lb)
Access to the various bolt on bits and pieces has become increasingly difficult and tricky, and involves frequent repositioning of the engine.
I removed the bolt on base and that has improved the situation a bit.
Then I had a brainwave, thought bubble, inspiration whatever, and I tried a ball bearing turntable…. you know….. one of those Chinese restaurant middle of the table gadjets.
It is incredibly useful!
Here are some pics and a video showing it in place; just a demo of the engine at its current (unfinished) stage. I think that the turntable might become a frequently used tool for heavier models.

The Bolton 9 on the turntable

And the latest additional bits… non return valves on the water pumps.
