Never Hardens
I attempted to use this product to fix some hairline cracks on the bottom gelcoat of my wooden boat. My first attempt proved the product would not penetrate the cracks, so after routing the cracks with a Dremel, I reapplied the product. Following the directions, I waited the fifteen minutes then removed excess material with the enclosed scraper, pulling the then gummy scratch patch right out of the scratches. On to the next product...