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    Sand Casting Shinkage/caving

    I am brass casting an piece that is About 1.5 inches thick and tapers down to 3/4 inch thick. I get a caving in or shrinkage. I have moved my air holes and the gates but still have the problem. ...

    MaryAnn 04-23-2017 01:26 AM
    Joanna Furnace

    3D printed patterns

    Still working on it. Haven't met Don D yet. I'll keep an eye out for him.

    Joanna Furnace 04-15-2017 08:48 PM
  • Recent Forum Posts


    Melting Rock?

    There are groups that smelt Iron from magnetite and other iron ores. I've got a bucket full to try someday, They use a small cupola type furnace and use

    Jammer Yesterday, 11:47 PM Go to last post

    A few more general questions


    Once again sorry for if these questions sound stupid, but Im a beginner trying to learn as much as I can...


    KyleM Yesterday, 11:06 PM Go to last post

    fireclay mortar??

    Fireclay is pure clay, nothing added.
    Furnace cement is for patching cracks in refractory.
    Anything called mortar is just that; it is primarily

    Rasper Yesterday, 10:53 PM Go to last post

    Foundry made from natural resources??

    Yes, I have done it in two furnaces. If it is a solid fuel furnace, it will work well. The outer regions of solid fuels act as an insulation so the furnace

    Rasper Yesterday, 10:44 PM Go to last post

    Melting Rock?

    Thanks for the tip on sedimentary rock! Certainly don't want any explosions. I'll have to look up exactly what each type of rock looks like, it's been

    MrPyro Yesterday, 10:27 PM Go to last post