[Jewelry making - Article 00078] - Re: [Orchid] Automotive hydraulic die forming

[jesse Brennan]

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    You have to be very careful with tooling. PVC Pipe and pipe fittings
    do not have enough strength to use as containment boxes. Even steel
    parts will deform and can break under pressure. This can throw stuff
    around the room- you do not want to be hit by any of this! Poorly
    supported components will fail. When you put stuff under pressure you
    store the energy which is released rapidly on a failure. The Cheap
    automotive presses may be made of questionable materials and design
    can be marginal. These can and some have failed. Even the Bonny Doone
    tooling can fail if misused. 

    Using a power operated jack can be much more dangerous than a manual
    system. You get no feedback as pressures go up. 

    The Devcon polyurethane mixtures the Isocyanate component is
    dangerous in the unreacted state. Injuries are primarily pulmonary
    but there are reports of other effects. 

jesse
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