Have any of you used this?

[kballan]

A buddy of mine recently told me about this stuff. It's called Steel'y - it's a steel reinforced epoxy putty. It sets up underwater, can be sanded, painted, drilled, tapped, etc. Seems to be a really good product. It bonds to metal extremely well. I used it to fill in my cab seam a couple days ago. I tried it first on a small piece on the side of the cab - let it harden, and sanded it down. Sands really nicely - no "chunking out" and sands really smooth. Just curious if anyone else has used this and how it worked for them.