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Thread: Treating crucible from and electric melting furnace before 1st use?

  1. #1
    Join Date
    Dec 2019
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    3

    Default Treating crucible from and electric melting furnace before 1st use?

    Hello,
    I have recently just set up everything I need to do my own at home casting... exciting!!! I bought the electric melting furnace from Cooksons and wondered if I need to heat/treat the crucible before I use it for the first time with metal? Trying to think of anything that can go wrong before I do the first cast so its a success! Many thanks in advance for any help and advise you can offer.
    Last edited by Tinka; 16-01-2020 at 04:06 PM.

  2. #2
    Join Date
    Sep 2014
    Posts
    2,064

    Default

    No but you know you need to heat the crucible before adding the metal?
    Also heat the kiln before adding the crucible.
    Make sure you pour in a fire safe area as the metal can bounce out occasionally.
    Also stir with a carbon rod and add a pinch of borax
    Have fun

  3. #3
    Join Date
    Dec 2019
    Posts
    3

    Default

    Quote Originally Posted by enigma View Post
    No but you know you need to heat the crucible before adding the metal?
    Also heat the kiln before adding the crucible.
    Make sure you pour in a fire safe area as the metal can bounce out occasionally.
    Also stir with a carbon rod and add a pinch of borax
    Have fun
    Thanks so much, I had thought of heating the crucible before but not putting it into a hot kiln so thanks for that info!

  4. #4
    Join Date
    Sep 2014
    Posts
    2,064

    Default

    You're welcome.
    It is to prolong the life of the crucible, also leave it out to cool in a safe place rather than leaving it to cool in the kiln for the same reason.
    Be sure to check it regularly and replace before it gets too fragile too, I once had the metal come through the bottom as I had not replaced it soon enough, oops.

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