Quote Originally Posted by ckelloug View Post
I'd personally recommend looking for one with 29.75 inches and as many CFM as you can afford.
Cameron
Dear Cameron,

IMVVHO, CFM does not matter if you have a well sealed vacuum system of the types suggested for EG. I do not think it matters if you take two minutes, or indeed, two hours to get to the the level of vacuum needed to "de-air" the glop, as long as the glop is not setting up in that period.

If there are worries about the epoxy out-gassing its chemical components, they will not appear until that critical level of vacuum is reached, and you can control that with a vacuum switch controlling the pump at any level you wish. Time, and vac pump though-put do not matter,unless the epoxy is going off.


Post#1478 and #1479. Aluminium preparation.

I could be wrong, but I'm reasonably sure that most epoxy manufacturers suggest mechanical abrasion ( it increases the surface area) and solvent de-greasing to improve the bond.

Best wishes

Martin