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I have molded several parts for my wife's VW Beetle (RIP), but it is a
little more complicated than the video shows to make a good molded
part. First you have to have a GOOD model part. If not, then
you have to use body putty or whatever to ifx imperfections, then finish
and paint the model to achieve a good surface. Also, bubbles are a
real problem. I rigged an old pressure cooker to pull a vacuum when
casting plastic parts to help pull the air out of the solution.
Even slow mixing can cause air entrainment. then there is the size
issue. It seems that there is always some shrinkage, so if you try
to cast a part that has to mate up to an adjoining part, there may be
some size difference. An oversize part is probably needed to make
an exact duplicate to an OEM, the larger the part, the more the
shrinkage, I believe. Still, for free standing parts, this is a
good way to make them. Bill Huff At 9/9/200803:34 PM, John McCann wrote: I have been looking into ways to repair or manufacture a new drive pulley for a snowblower I have that is obsolete, I found this video that shows how to make a mold for a new part and I know that all of you would like to have new parts on your restoration, so why not make them yourself? ************************************************************* To unsubscribe or set your subscription options,
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