: I agree with Don. You should use the No-blush hardner, especially since your
: pre-coating. I use the fast hardner for small chores - wood to wood
: bonding - it can blush pretty early in the hardning process.
: For glassing, I highly recommend the no-blush.

I've noticed a little blush with the 610 fast, especially when it cures quickly. I haven't had much of a blushing problem with 606 slow, even though it's not called "no blush".

I just purchased some 350, but haven't tried it yet.

: If you're sold on your hardner choice, I would give it a good scrubbing with
: a scotch bright pad and soap and water first. Dry it good.

There's always the "go paddle it really well before varnishing trick"! Although I'd still recommend the soap wash if you have a lot of blush.

Shawn