All Blog Entries

  1. Recent silver coins with varying patina

  2. Extruder carriage

  3. Is this type of plaster appropriate for a refractory lining?

    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

    I wanted to replicate the "Grant Thomson - King of Random foundry" ( and I was wondering if this plaster when mixed with sand would yield the same result as plaster of paris?
  4. My 1st waste oil burner design (based on how a nebulizer works)

    Quote Originally Posted by joule_ian View Post
    I wanted to show off my 1st waste oil burner design. I have always been fascinated with nebulizers. My first attempt at designing a burner involved nebulizing kerosene and ducting the gas through a propane venturi. It did work but way too small and expensive to run. I figured I needed to use waste oil to bring down the cost and design a new method. I was playing around with my nebulizer with a little kerosene in it and I removed the baffle and turned on the air. The vacuum disk sucked the kerosene
  5. would a plaster and sand crucible work?

    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?
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