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  #16  
Old 12-11-2011, 07:42 PM
strick strick is offline
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Join Date: Aug 2003
Location: California
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Quote:
Originally Posted by mbmcdermott18 View Post
What is the difference between pva and wax? I have read of people using both and I have read of people using one or the other. Is one better than the other?
You are gonna want to wax and buff the mold several times and then spray it several times with PVA This is the best way to assure that the part does not stick to the mold.

I have not used the gun that you posted in the link but it looks like a good set up. I do have a cup gun for spraying gel coat and they are a little tricky to use. Because the cup is mounted horizontally on the gun the gun must be pointed up and the trigger pressed before you lower the gun or material will drip out the tip and make a mess. They let out a LOT of material. The gun that you posted looks much like a conventional spray gun and should be easier to use.

Your biggest challenge in this project will be a nice flat surface to mount your plumbing to so it will seal nice and even....in hind sight coreing it may not be a bad idea. I like Core Cell but on such a small project properly sealed plywood might be more economical.

strick
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