ORIGINAL: Hydro Junkie
..........I routinely use West Systems extra slow hardener with the base resin to give me more working time with the epoxy so that parts can be repositioned as needed before the epoxy starts to harden
extra slow is the 209, it's great for huge layups but 206 (and even 205) are much better choices for parts and small layup jobs. the 209 can take up to a week before you can move parts, that's just too long to wait for those applications IMO.