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Easytime paint stripper5/21/2023 ![]() ![]() Mask any opening – blowing paint into the wing is sloppy. Mask as necessary with paper and masking tape. Wear plastic gloves from this point forward if you haven’t already oil from your skin is bad for paint adhesion. (Note - you must not let the Alodine dry on the plane)ĭupont recommends priming as soon as possible after this coating as been applied, no more than 36 hours or it should be reapplied. This is called the water break test in the composite industry (works for paint adhesion also) The self-etch primer without acid scrub will not provide this.Īlodine (chromic acid) is applied (such as DuPont 13206S Aluminum Conversion Coating solution), left on until color change is evident, and rinsed off with fresh water and then dry overnight. Beaded water indicates oil, keep scrubbing with etch until the water flows flat. ![]() This is the most important step in paint adhesion because the acid scrub and rinse removes the oil/wax. It should be applied with a weed sprayer and scrubbed well with scotchbrite. ![]() (From Bill Berson) The phosphoric acid etch improves paint adhesion by cleaning away oil. Perform Airframe inspection by A&P for corrosion or underlying damage to aircraft.Īcid Etch process with an aluminum cleaner to guarantee that all residue has been removed (Dupont 13204S or 13205S as examples) and rinse with water. Important – do not use steel wire brushes or scrapers because the steel particles will embed in the aluminum promoting corrosion. Remove remaining paint and corrosion from the following parts:Īll edges that were covered with the foil tape. Don’t use too narrow a pressure washer orifice - it will be easy to damage thin components. After checking a test spot, scrub paint loose with stiff 12”-14” broom, re-apply more stripper, then pressure wash – don’t spare time or water on this step. Apply the stripper and cover with polyethylene drop cloths ( if compatible with your stripper) to prevent it drying out early - the polyethylene can make the stripper last indefinitely depending how well you seal it. Wet the shop floor and cover with plastic polyethylene drop cloths ( if compatible with your choice of stripper) - so you can recover waste. Thin strips over the wing/fuselage gasket (Piper). Can’t emphasize this enough – you don’t want stripper inside your airplane which will work its way out later so even cover small openings including where the inspection panels were removed. Plastic, Fiberglass and composite (not removed in step 2)Īll openings into aircraft such as door seams (¾ inch aluminum foil tape). This edge will be stripped separately later. Extend the foil tape 3/8” past covered area onto the metal airframe. I like to take cell phone photos of everything during disassembly.Ĭover windows with aluminum foil and edge with foil tape. This will improve the performance of the strippers.īag and mark the fasteners so you know which type went where later- even if you are replacing them. Thoroughly wash the plane with a wax free soap, especially landing gear and other areas which may have grease or oil residue. Please let me know your thoughts and suggestions.Īssumptions: You are using chemicals per the chemical manufacturer’s safety and handling instructions.ĭuPont Technical Page () Sherwin-Williams () I assembled this checklist from a lot of different sources, and interviews, after I could not find anything online here that covers it. ![]()
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