Forgot to mention that in the previous post; the last two shoots I did making clear glass ambrotypes I finally got around using a suction cup for pouring the plates. The clear glass is so thin (it’s leftover glass from broken frames at work) that when pouring collodion on it while waiter-traying you’d notice the heat of the fingertips leaving clearly visible marks. You can of course use the cantilever method (hold the plate in a corner while pouring) but I find that to be a very uncomfortable manner and with a 4×5″ it leaves you with a relatively large stain in one corner. Suction cup is THE way to go! Anyway, thought I’d share 🙂
P.s. When developing I just use the waiter tray method; so far so good. Perhaps when I’ll change the developer and need a really extended development I’ll get back to using the suction cup because the heat of the fingers might come into play again.