My Hartman Electric Furnace

[rgsparber]

Thanks Rick,
I love your PDFs. Have you ever looked a foamed cement? One day if people ever stop bothering me I need to build a furnace and I have seen a few people using foamed cement sealed with Waterglass as the insulator with very good results. I like the fact that it is easy to work with and castable.
Here is a link to a foam generator that works well: http://pelagic.wavyhill.xsmail.com/

I don't have any background in cement but the paper is certainly interesting. I couldn't find a date so wonder when it was written and how have samples fared over time.

I know that mixing high temperature cement and perlite is a common procedure when making furnaces. It would have a similar outcome.

Thanks,

Rick