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  1. M

    I have 2 hydraulic cylinders (3"x18"). What should I make?

    Be aware that it isn't trivial to synchronize two cylinders.
  2. M

    Process to cutting an old propane tank

    Propane is "odorized" with methyl mercaptan, a very perceptible (odor threshold is in the range 0.1 to 1.0 parts per billion) "skunk-like" odor. Some say it strongly smells of garlic. The chemical makeup of ethyl mercaptan is CH3-SH. This can be quickly and easily transformed to CH3-SO3 by...