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What is a recipe for refractory cement in small amounts?

http://www.instructables.com/id/Mini-Charcoal-Furnace/#step1
This has me wanting to make my own foundry, however i can't find how to make refractory cement, and nutandbolt doesn't list his own recipe.

Alternatively, Where can I buy refractory cement in Australia?

seandogue3 years ago
It should be available at professional builders supply stores, and in small quantities at DIY big box stores. (I purchased a ~1 gallon container a couple of years ago to do tuck pointing on my fireplace's firebox (although I still haven't gotten to the job yet...grrrr)
You need to look for sources of "calcium aluminate" -find a good traditional "builders merchant"

Steve
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