The biggest that I've done is 40"x50" or about 1/2 the size you are trying to make. I have used trays ; ) Although the small canal/deep tray works OK for some, I though it hard to see the image. working slightly more dilute we did do some bigger images. Flat in part of the tray to get the chemical on the paper then, rolling it up one way, and then the other. I'd adapt to the space available. How do you plan to wash it? I use a tray siphon. Eric Neilsen Eric Neilsen Photography 4101 Commerce Street, Suite 9 Dallas, TX 75226 www.ericneilsenphotography.com skype me with ejprinter www.ericneilsenphotography.com/forum1 Let's Talk Photography _____ From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Claudio Bonavolta Sent: Thursday, June 03, 2010 6:22 AM To: Pure-Silver Subject: [pure-silver] Methods to develop large size papers Dear All, I'll probably have to develop large FB paper sizes (around 50"x75") soon, what methods would you advise ? I know the following methods: - roll forth and back the paper in a home-made "canal" deep tray. This one looks ok. - the sponge (let the paper on the floor on a large plastic sheet and apply the chemicals with a sponge). I know some that did it but don't see myself doing it ... - the home-made drum seems unpractical due to its weight Thaniks in advance, Claudio Bonavolta http://www.bonavolta.ch ======= Email scanned by PC Tools - No viruses or spyware found. (Email Guard: 7.0.0.18, Virus/Spyware Database: 6.15130) http://www.pctools.com <http://www.pctools.com/?cclick=EmailFooterClean_51> =======