This demo shows how to use a Diatrim Flange Trimmer (model 20-FT25) on fiberglass. Diatrim Flange Trimmer 20-FT252021-04-012021-05-05https://fiberglasscuttingtools.net/wp-content/uploads/2021/04/fiberglass-logo.pngFiberglass Cutting Toolshttps://fiberglasscuttingtools.net/wp-content/uploads/2021/05/diatrim-flange-trimmer.png200px200px