I wear contacts, and do some porting, but not even close to full-time, averaged out over my lifetime, I might do 1-2 sets of heads a year, almost always iron. I haven't had any issues so far, but the vacuum idea sounds good. I usually shine a light up from the opposite end of the port, so I will have to find another way to get enough light in there, but I am going to try this out. An ounce of prevention...BirdMan wrote: ↑Thu Mar 12, 2009 3:33 pm What I have used for 20 some years is a 5 gal shop vac sucking on the opposite end of port I am working on. It even helps when doing an intake manifold even though you have several openings which I guess you could plug/tape to seal. I normally do not use a mask of any kind. I only use a mask when I am working on something else where I can't use the vacuum. The fan sounds good, too.
And I almost NEVER leave my contacts in while I sleep, the only exception might be if I am sleeping on a plane or train. Even then, I really feel the difference if I don't take them out, not good.