----- Original Message ----- From: "Scott Loveless" Subject: darkroom ventilation
> Hey, gang! > > To those of you who have or have had a dedicated darkroom, how is/was it > ventilated? The darkroom plans are coming along, but I'm stuck on vent > placement and whether I should include a fan blowing in, as well. > Currently, I'm thinking about an exhaust fan at about chest level, > centered on the wall over the sink. Do you think another fan blowing > into the room might help cut down on dust by providing some positive > pressure? > > FWIW, the room will be 8x8, in the basement, with a galley-style layout > - a wet side opposite a dry side with space down the middle from the > door to the opposite wall. > > Thanks a lot, and much appreciated. If you are putting up stud walls, then somewhere in the vicinity of your wash sink, you will want to cut a hole in the drywall somewhat above sink level, and on the other side of the wall, you will want to cut another hole, offline from the first to provide a light trap, and put a fan on that hole, blowing out. If the door isn't really tight, that should be all you need to do, as the darkroom can be designed with built in light traps to keep the printing area dark. In my own darkroom, I built a 2x8 stud wall inside the darkroom, which I Hilti pinned to the concrete floor, for the 4x5 enlarger chassis to mount to. I deliberately left the door a bit loose for air circulation, but it was on the other side of the 2x8 wall, and so the light leakage was between non existent and insignificant. My wife could bring me a cup of tea while I was printing, with no worries about making sure no paper was out before she opened the door. William Robb William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
