providing the filter doesn't reduce airflow too much so that enlarger overheats then I guess any filter which fits will do for a temporary measure. Even a piece of porous foam (providing it doesn't get too hot). ============================================================================================================= 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.