Hang on, you said you have a pair of wing skins made from Vinyl Ester resin, well that's a horse of a different color.
Did you know, epoxy resin and methacrylic acid form the base for Vinyl Ester resin; Styrene monomer is then added as a diluent to give the Vinyl Ester a lower viscosity. Promoters and accelerators are used to help initiate cure at room temperature. Vinyl esters are inherently unstable and will slowly polymerize/gel on their own. Vinyl esters are not cured or cross linked with curing agents like epoxies, they are catalyzed like polyester resins through the use of MEKP. NOTE: Vinyl Esters - Styrene component - will dissolve Styrofoam. However, this changes nothing as it relates to using polyester putty to fill with. Polyester will absorb moisture, swell and ruin your paint job. Larry A Capps KR Newsletter Naperville, IL "Quantum mechanics: The dreams stuff is made of."
