I am using Bondo spot putty as a light filler to fill in the deterioration in the plastic around the window. This is the same material used to fill pin
Durable Putty: Made from strong, abrasive-resistant materials for long-lasting repairs Versatile Application: Can be used on fiberglass, metal, wood,
3M/BONDO 907 Putty - Sandable Body Repair
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Bondo® Body Filler
Bondo Original Filler is an all-purpose, two-part filler compound used for interior or exterior repairs for home or auto. Fill dents, dings, and scratches on your car or around your home. The easy-to-use filler shapes in minutes and is formulated to be non-shrinking. This fast curing two-part filler allows you to make high-quality, permanently durable repairs to metal, aluminum, masonry, concrete, and more.
3M 00261 Bondo Lightweight Filler Pint Can - 14 oz.
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Bondo red glazing putty and spray can paint. : r/Cartalk