Refractory cement

Discussion in 'Home Foundry & Casting Projects' started by Dubi, Apr 13, 2019.

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  1. Apr 13, 2019 #1

    Dubi

    Dubi

    Dubi

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    From most articles and posts I have read the usual material is Fire Cement and Perlite but I have also seen reference to a Plaster and Sand mix.

    My construction will uses 44 gal drum so the requirement quantity is quite large. Where I am located cement is about 1$ a Kg and Perlite is about twice that. A Plaster and Sand mix would be much cheaper but is it as effective as Fire Cement and Perlite.

    I would appreciate any suggestions/advice fellow posters can offer.
     
  2. Apr 15, 2019 #2

    Jack3M

    Jack3M

    Jack3M

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    Well perlite has air spaces within it so using perlite would make for better insulation and thus less heat loss. The idea of plaster is spooky as it is really quite fragile. Fire clay and perlite and sand has worked for me in the past. BUT I think overall KaoWool is much better. Remember any wetted refractory needs to dry, cure, and then fired. Do not just fire, it will explode
     
  3. Apr 15, 2019 #3

    Dubi

    Dubi

    Dubi

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    Thank you very much. I will go for the Fire Clay and Perlite.
     

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