Joe Cruz wrote: >>Tonight I went to remove the peel ply material and noticed I have some areas that appear lighter in color...<<
Peelply should be applied as soon as your layup is wet out and squeegeed into place, so I'm not sure it's possible to apply it "too soon". I've done a lot of layups over the years, but maybe the best "start to finish" process that I've documented is at http://www.n56ml.com/nacaducts/index.html , where I laid up the NACA ducts on the bottom of my plane. Usually layout the material by marking the outline on clear plastic, wetting out the material on the plastic, and then transferring the material (fiberglass) to the foam after the foam has been slurried and the material wet out. Some of that kind of stuff is shown at http://www.n56ml.com/owings.html . http://www.n56ml.com/n891jf/panel/ shows some Peelply soaking up excess epoxy. If your Peelply is all dark, you've still got excess epoxy and would want to remove and reapply with new material to absorb more epoxy, but that gets somewhat expensive, considering the cost of Peelply. Best not to put the epoxy there to start with. I try to "starve" the material of epoxy and then add a little to the dry spots until it's all wet out. I almost never has excess epoxy that I have to squeegee of the material...I'm usually shepherding it over to a dry spot instead. As far as pulling Peeply off the foam, I've never managed to do that, but I'm sure you could as an "unhealed" edge where the foam core is exposed. One way to minimize the tension on the foam surface is to peel the ply off almost parallel to the surface, rather than perpendicular. This is also a good way to peel tape off of a painted surface without taking the paint off. There's nothing wrong with the Bondo squeegees. Those are my favorite! The ones that come in a pack of three, all different widths that are widely available work like a charm, although I usually cut the big one in half to keep them small. Of course I clean them up with lacquer thinner after use and they last hundreds of uses before I finally forget one night and let the epoxy cure on it... Mark Langford ML at N56ML.com see experimental N56ML at www.N56ML.com
