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  1. brainy19

    Plotter and cutter machines

    Hi, I've been using laser printers to print on transparencies to make a product for Etsy. It's been going well but I would like to look into options to printing larger volumes of the product, instead of just printing on the laser printer, then cutting the pieces manually. Is there a plotter...
  2. brainy19

    Crude glycerol purification

    Considering my interest in biofuels, I've always wondered about crude glycerol purification. Since there is a glut of the stuff due to biodiesel manufacturing, what are companies currently doing to purify the stuff? I know 97% grade and 99.8% grade glycerol has a lot of uses and that crude...
  3. brainy19

    Question about Silicon Nitride and Internal Combustion Engines

    My friend and I were discussing internal combustion engines and we spoke of different materials used to manufacture engine blocks. He mentioned silicon nitride and the associated advantages of the material. Out of curiosity, I'm trying to do some research on synthesizing silicon nitride and...

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