In my quest to do some dry-plate photography, I have hit so many roadblocks, from the inavailability of glass less than 2.5mm thick, to coating issues, that I am going mad. I am seriously doubting that dry-plate is even POSSIBLE the way I am doing it. Here is what happened. Yesterday I ran two experiments. I coated two 2.5mm plates which I cut short. These seemed to fit the plate holders I have as long as they had a gap between the bottom of the plate and the bottom of the holder. I subbed them with gelatin, just the way the instructions tell you. At the same time I had two sheets of .007 mylar I subbed with gelatin and coated. They were going into a film holder, in the hopes that this would work instead of glass. All 4 items spent the whole night drying in my paper safe. They were dry to the touch this afternoon. I loaded everything up, and went home. I immediately went outside and started to expose them. I discovered though that the emulsion had MELTED! On all of them! It was oozing out everywhere, and was very liquid. Worse yet, it was sticking to the dark slides! Now, here is the thing... Liquid Light ALLEGEDLY needs 140F to melt. While it is hot here, those plates and sheets NEVER got above, at BEST 103F. More realisticly they never hit 90F. What is going on! I have ruined ANOTHER plate holder, and need to clean the hell out of my sheet holder now. It takes me 20 minutes to heat up the LL in the darkroom in a crockpot, but two seconds outside and it runs like hot honey! I am literally at the end of my rope here! I just recieved an old, maybe 80-90 year-old glass neg I bought, and this thing, which was sitting outside in a metal mailbox, and was hot to the touch has an emulsion as solid as the rock of Gibraltor. It is also MUCH thinner than anything I have managed so far. Can someone PLEASE help me here? I just want to coat my own film!