I don't know whether or not I'm causing any problems for myself in the future or not, but I often use a painter's tac cloth (found in painting supplies at hardware and paint stores) to wipe down my 4x5 and 5x7 film holders. I have not found any evidence of this being a bad idea so far, and I've been doing it for 3 or 4 years. Maybe Richard would have an opinion on whether or not it is safe. It certainly does remove dust on the holders and the dark slide. And of course, I also use the costly canned air at times. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.