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Is this type of plaster appropriate for a refractory lining?

by jamestrainer on 06-30-2016 at 02:30 PM
This specific casting plaster is only a fraction of the price of plaster of paris and seems to have the same chemical composition i.e. Calcium Sulphate Hemihydrate

http://www.gyprock.com.au/Pages/Prod...Technical.aspx

I wanted to replicate the "Grant Thomson - King of Random foundry" (https://youtu.be/hHD10DjxM1g) and I was wondering if this plaster when mixed with sand would yield the same result as plaster of paris?
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would a plaster and sand crucible work?

by jamestrainer on 01-15-2016 at 02:53 PM
I recently watched a video of a refractory cement substitute made from 50% sand and 50% plaster of paris. Could this same mixture be used to make a crucible strong enough to melt aluminum?
thanks
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What is this ceramic "slurry" made out of?

by jamestrainer on 01-10-2016 at 06:36 PM
Hi I'm new here

https://youtu.be/9Jzu4nNplac?t=1m6s

this video contains a ceramic "slurry" substance that appears to be really effective at preserving detail for lost wax casting, as well as being incredibly heat resistant. I was just curious as to what it is made out of and whether there was some kind of recipe for it, that can be produced with stuff from a hardware store.

If it's too hard to obtain, I already have an alternative in which

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