: While you can't sand Kevlar, you can scrape it with a sharp scraper. I prefer
: carbide scrapers for working with composites, as they hold an edge well.

: There is no problem with gelcoat bonding to Kevlar.

What I meant was it's difficult to get a mechanical bond with polyester gelcoat and kevlar since you can't sand it and it's not all that great of a glue so chemical bonds tend to be unreliable.

Bill H.