Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Wow...Beautiful job on the restoration.  Very clean.
Very smooth. Very shiny. Very very!

Yes on the variac, or...I use a light dimmer switch of an
adequate wattage capability.  I've heard that boron-nitride,
a sloppy and pasty material, is poured into gaps between
a cartridge and the buffers.  When it dries it enhances
the heat transfer and has a very high temperature limit.
I bought some but haven't had the chance to use it yet.

Good Luck,
Wayne