6″ Vertical Boiler. Ideal soldering set-up block. Concrete!
OK. My non machinist readers will have no idea what I am talking about. And I suspect that my machinist readers wont either.
I need some precisely machined and measured blocks to set up the soldering for the boiler. I want them to not suck up my soldering heat (so no metal), and to not stick to my silver solder (so not steel, copper, etc).
How about concrete? More specifically, aerated concrete. Hebel.
Look at the pics…… I need a cylinder, about 100mm high and 110mm diameter, which will not absorb heat and not stick to silver solder.