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" It that is what it is, I suggest taking white solid blocks of polystyrene
> and trim them to make a master mold.  Then lay up glass on them.  Finally,
> dissolve out the foam with acetone, leaving your hollow tunnel of
> appropriate configuration."

I would add the following to the above comment.  Cover the polystyrene with
bondo and sand it smooth to shape. Grease it up and then add the glass bids
to cover.  The inside surface of the part will then be smooth and the resin
will not adhere to the greasy bondo.  The bondo is then cracked out after
removing the polystyrene.

Bob Smiley
N94RJ



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Please send your photos and drawings to marvkaye@olsusa.com.
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