I'm a convert to peel-ply. Only used it a couple of times so far, and would use it again for surfaces requiring painting or secondary bonding. On removal
, the peel ply takes the greasy "amine blush" with it. Also useful for holding or pulling wet glass around edges/small radius. Because there is virtually no sanding required, the risk of rubbing through the glass is greatly reduced. Reduces the amount of resin required.
It has to be done right otherwise you can be left with more work than no peel-ply at all. If working alone roll the dry peel-ply onto a cardboard tube, stick the free end down to one end of the wet glass area and unroll. Use a squeegee to gently press onto the wet glass, taking care not to stretch the peel-ply too much, but enough to avoid wrinkles.
Apply more resin over and through the peel-ply with squeegee to wet it out, and to ensure weave of glass is filled. The dry areas visible in the photo
are a good illustration of not quite enough resin, so don't run out of epoxy
. Leave an edge of peel-ply standing somewhere so you have something to get hold of when time comes to peel it off.
retailer in Australia
was selling the stuff as "Polysilky", commonly used for lining jackets. Cheaper than the stuff from the fibreglass suppliers.