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Pva Release Film

$25.65/Quart
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Part# 01-14813A
MFR Model# 13-A

Overview

PVA (Polyvinyl Alcohol) should be used with mold release wax to aid in the release of parts form a mold. It should be applied in three thin mist coats over nonpourous, waxed mold surfaces. After the final wax coat has dried, begin by spraying a light tack coat of PVA. Typically, within 5 minutes the final heavier coats can be added. The PVA dries to form a smooth, glassy film. After part release, the residual film can be removed with water. We recommend using an inexpensive automotive siphon spray gun and 70-90 psi for application, although airbrushes will work on hobby size projects. PVA can also be sprayed over any polyester repair to provide an airless tack-free cure. For use with epoxies.
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Reviews

I have experience with moldless composite construction (laying up on foam), but have never built larger parts on a tool requiring the part to release. I did some testing using Stoner release wax alone, and the Stoner wax with this PVA product applied over the wax. I am building a cowl and using both the wax and the PVA, the release has been excellent. I could be wrong, but I attribute the release to the PVA. I applied it with a foam brush as I dont have a spray set handy. I recommend two coats of the PVA at least as it tended to bead up on the buffed waxed surface.

Andy S
December 27, 2021

Paul A
May 2, 2019

Q&A

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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