Get PVA at http://www.aircraftspruce.com/search/search.php  .  I also 
searched Wicks' site because I KNOW they have it, but after about a minute 
of search through everything from tailwheels to foam, I gave up and found it 
instantly at AS&S.  Basically it's used as mold release agent.  Wax the mold 
with mold release wax, then spray a very light dusty coat of PVA (if you put 
it on wet it'll just bead up on the waxed surface), and then once that dry 
coat dries, you can put on a wetter coat or two to form the film.  Then 
layup your cowling or whatever, let it cure, and the PVA will pop apart (or 
will dissolve if exposed to water).  Never heard of using it for sanding 
purposes, but if Lee says it works, it probably does...

Mark Langford
n5...@hiwaay.net
website www.n56ml.com 

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