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07-18-2008, 08:37 PM
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#1
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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How to make liquid wax for fiberglass molds.
I'm so proud of myself, I figured out how to make a substitute for PVA mold release. I called nearly 20 auto paint supply stores and no one had it, so I was forced to play chemist in my garage.
Soak old candles or any sort of wax (cut or chopped up into small pieces, wax beeds work the quickest) in a bottle filled with paint thinner (not too much). Let it dissolve for 24 hours, shake it up, brush it or pour it on your mold. After 5 mins the paint thinner will dry leaving the surface with a perfect coat of wax. 
Last edited by enkeivette : 07-21-2008 at 01:11 PM.
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07-18-2008, 08:44 PM
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#2
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A Motorgen O.G.
Join Date: Jan 2007
Posts: 402
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Quote:
Originally Posted by enkeivette
I'm so proud of myself, I figured out how to make PVA. I called nearly 20 auto paint supply stores and no one had it, so I was forced to play chemist in my garage.
Soak old candles or any sort of wax (cut or chopped up into small pieces, wax beeds work the quickest) in a bottle filled with paint thinner (not too much). Let it dissolve for 24 hours, shake it up, brush it or pour it on your mold. After 5 mins the paint thinner will dry leaving the surface with a perfect coat of wax. |
I'm not taking any body/paint advice from the dude with seagull shit on his car...
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I'll fix your computer.
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07-18-2008, 09:15 PM
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#3
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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Quote:
Originally Posted by CorruptCulture
I'm not taking any body/paint advice from the dude with seagull shit on his car...
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Haha, that's what it looked like after the chemical strip. Here's a more recent pic:
You can see the difference between the sanded panels and the panels that had just been chem stripped here:
After tonight I'm almost done with the power sander, the pass side door is all that's left to do. Then I will start the body work and hand sanding. |
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07-19-2008, 02:28 PM
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#4
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I, Vettezuki
Join Date: Feb 2006
Posts: 14,754
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Quote:
Originally Posted by enkeivette
I'm so proud of myself, I figured out how to make PVA. I called nearly 20 auto paint supply stores and no one had it, so I was forced to play chemist in my garage.
Soak old candles or any sort of wax (cut or chopped up into small pieces, wax beeds work the quickest) in a bottle filled with paint thinner (not too much). Let it dissolve for 24 hours, shake it up, brush it or pour it on your mold. After 5 mins the paint thinner will dry leaving the surface with a perfect coat of wax. |
I'm assuming you mean PVA = Poly Vinyl Acetate. If so, you're going to be a bit disappointed.
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07-20-2008, 03:12 AM
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#5
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Super Moderator
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Quote:
Originally Posted by Vettezuki
I'm assuming you mean PVA = Poly Vinyl Acetate. If so, you're going to be a bit disappointed.
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I know it's not the same, but it will work the same. Wax paper is even a suitable mold release. What I've done with the paint thinner is make a fast drying liquid wax. It will surely keep the glass from sticking to the wooden mold. Do you not agree? |
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07-20-2008, 12:50 PM
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#6
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I, Vettezuki
Join Date: Feb 2006
Posts: 14,754
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Quote:
Originally Posted by enkeivette
I know it's not the same, but it will work the same. Wax paper is even a suitable mold release. What I've done with the paint thinner is make a fast drying liquid wax. It will surely keep the glass from sticking to the wooden mold. Do you not agree?
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Yeah, for that it should be ookay. As for mold releases, the silicone impregnated paper used in baking (food) might also work well.
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07-20-2008, 05:15 PM
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#7
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Super Moderator
Join Date: Dec 2007
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I guess there are different types of PVA, I should have specified. And I'm not sure if the stuff I was looking into stands for poly vinyl acetate. There is something called PVA that is used in painting aswell, mixes in with the paint and does something magical.
Anyways, my mold will have edges and I don't see how I'd be able to use wax paper in the corners without it wrinkling and screwing up the surface.
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