I tried to used this in place of real mixed epoxy to fill a few deck holes, on my sailboat, where I removed hardware. I use thicken epoxy all the time whilst working on boats. This stuff is more like a two part 3M 4200, without the adhesive properties. Its soft, as others have said. It falls apart, as others have reviewed, its less adhesive than crappy silicone. It also grew over night like Gorilla glue and left a bubbly aerated mixture. Prior to filling I gouged out the holes with a Dremel, cleaned them of all dust with a vacuum, cleaned with acetone, and stillalmost zero adhesion. The good news, I could just clean this garbage out with my finger nails.