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  • Users: iwmob
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  1. iwmob

    Bend But Don't Break

    Thanks for the response. If molded flat, it would be a simple two-piece straight-pull mold. If it were molded in the bent config., it would require a lot of right angle pulls for thru holes and recessed areas. In the flat its overall height (thickness) is only .375". After folding its...
  2. iwmob

    Bend But Don't Break

    I'm designing a part that will be molded (injection) in the "flat" and then bent at 90deg angles for assembly (the part would be too expensive to mold in the final configuration). This is not a "living hinge". It will only be bent one time, probably right out of the mold...
  3. iwmob

    connecting polyurethane to aluminium

    In my experience, the best way to get a really good "bond" between PU and aluminum is with a mechanical lock. The way I've seen it done is to have holes or passages for the PU to flow thru and lock to the aluminum in an over mold / injection mold process. For instance, the hub of a...
  4. iwmob

    R-12 vs R134a

    Knowing the vehicle, I can't believe they'd spend $50/lb for freon when a retrofit is so simple. Especially when you're replacing the compressor and dryer. Who knows, that's why I wanted to know how to tell the difference.
  5. iwmob

    R-12 vs R134a

    Is there any way to differentiate between the two (in an a/c system)? I bought a '89 Blazer with a new compressor and accumulator/dryer and it's low. I don't want to add the wrong type and lock up the compressor. I'm too lazy to drain it and start all over. It doesn't have the larger...
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