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Old 03-21-2007, 09:22 AM
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Plastic (OMG) molds

Is it at all cost effective to do ABS plastics of doorskins and the like?
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Old 03-21-2007, 01:40 PM
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There has been a few discussions re vacuum forming of abs parts, here is one such thread..

Vacuum forming

The thread was split off from another thread in the lounge, that is why there is some discontinuity in several of the posts.

There are some good links in that thread that can help you..

Later, mikey
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Old 03-21-2007, 02:32 PM
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Thanks. Now I need to now what I need material-wise (as in, what would be the best plastic for my use, and how thick do I need it for a somewhat durable fender/doorskin?
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Old 03-21-2007, 02:57 PM
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Let us know how it goes. I had a 77 roadrunner with plastic louvres glued on the quarter windows. Someone ripped them off. Obsolete part, so I consulted a plastic company about vaccum forming them.

They said no problem, but I had to allow (I think) 10% for shrinkage.

That would be a challenge if something shrunk that much!
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Old 03-26-2007, 12:03 PM
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you may want to check out dascar plastics. They are on the web. I have used there rp-40 a lot to make molds for vacuum forming carbon fiber. My suggestion would be to use a flexible casting product for larger parts. The rp-40 is pretty hard and durable stuff once cured, and it also has a short pot-life of 2.5 minutes and you can demold in 15. Make sure to use a good release film for whatever you cast. That makes the difference in major headaches, ruined originals, and broken molds. look at the flex 50
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