Thanks Mike, Wynand, yeah thiners is a bit expensive to be blowing away into the air !.
I think the meths would be a good finish "rinse", with comp- air spraying, is it safe [ for the seals etc ] to put through an airless ??
I'll go for the reusable idea periodically pouring off "good" stuff & cleaning out the crud .
Wynand does what you say, re air in the epoxy, hold true allways ?. I mean are there times when I can use my comp air spray gun , or don't ever with epoxy !?.
If that's the case I'd best buy myself an airless sprayer ---- bugger !, can't keep useing ya mates one eh !! .