Jim Cullen Posted December 29, 2005 Share Posted December 29, 2005 Hi Group! I started bulding a Cozy Mk IV many years ago (Plans #0076), got about 70% of the airframe done, and then gave up because of a bad series of allergic reactions to the epoxies. I had used Saf-T-Poxy II, a Hexcel epoxy that went by a number (no name) which I forget, and a third epoxy that I also can't remember. I'll also confess that my personal protection was pretty poor (latex gloves, no respirator, etc.). The fuselage has a kind of bluish, greenish, brownish, yellowish color. Anyway, I've been building a kit car (Classic Motor Carriages MG-TD) lately and have been using EZ-Poxy and far better protective equipment (butyl gloves and a carbon canister respirator -- religiously) and am happy to report that I have had no adverse reactions. As a result, I'm thinking of going back and re-starting my Cozy Mk IV. Because my technique has improved over the intervening years, I'll probably start the project from scratch and not reuse much of the previously done fiberglass work (except the elevators and centersection spar, which came out beautifully). My question is: What epoxy are you guys and gals using nowadays? Is EZ Poxy OK? I understand that there is a new epoxy that has a long pot life -- which is useful if you're skinning a wing by yourself. I wouldn't want to attempt this with EZ-Poxy -- it has too short a pot life. What do you like and how can I learn more about the properties of the currently advocated materials -- especially the temperatures that I have to hold while working the layups? Are the new materials approved by Nat Puffer? Many thanks for your help. Tailwinds, Jim Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.