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Thread: Casting plaster waste

  1. #1
    Join Date
    Sep 2019
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    3

    Default Casting plaster waste

    Hello,

    I do a lot of lostwax casting and it produces quite some plaster waste. I am wondering what is the most effective way of dealing with the plaster waste? If you do casting, what systems are you using to deal with the plaster?

  2. #2
    Join Date
    Dec 2009
    Location
    Central London
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    7,357

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    Used Casting plaster is not hazardous, being mainly gypsum with small residues of the metals cast. It can be disposed of in domestic or business waste, but crumbled is also useful as a conditioner for heavy garden soil. Dennis.

  3. #3
    Join Date
    Mar 2011
    Location
    Manchester UK
    Posts
    650

    Default

    I drain as much of the water off as I can after its settled over night with a syphon then put it on a big tray to dry out. Then dispose of it in a heavy duty plastic bin bag. I put the bag in a bucket to fill it up. Its a bit messy but ive not forund a better way. It would be quicker if you could filter the water out in a cheese cloth or similar,but never tried.

  4. #4
    Join Date
    Sep 2019
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    3

    Default

    Thank you for your awnsers. I also use plastic bags and then drain out as much water as I can and then throw it in the garbage pin. It is quite messy. I was wondering if somebody has some more efficient method.

  5. #5
    Join Date
    Dec 2009
    Location
    Central London
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    7,357

    Default

    Put it into a large sieve or colander to drain surplus water, then tip it into a heavy duty bin bag or garden bag for disposal. Dennis.

  6. #6
    Join Date
    Sep 2019
    Posts
    3

    Default

    Thank you.

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