Increases the strength of any epoxy. Perfect for adding strength to firewalls, wing hold-down blocks, landing gear blocks. Easy to use. Can be smoothed over with isopropyl alcohol for a sleek finish. One 4 oz bottle of Milled Fiberglass. This is a4 oz bottle of milled fiberglass that is used to strengthen epoxy bonds. It is mixed with epoxy glue at a ratio of 1/4 to 1/2 teaspoon per ounce of epoxy. (ratio verified w/product manager KB
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