So I'm trying to make "tintypes" with the Rockland Colloid chemicals, that is Ag+ Emulsion and developed in Dektol 1:1 mixed with Ammonium Thiocyanate. I am using Fuji Sensia 100 E6 film through and enlarger to expose the plates. I cut aluminum stock, which was then spray painted with black enamel spray paint. At f/2.8 the exposure was around 10 sec for a 3"x3.5" plate. I let the developer "ripen" for about an hour and a half in an open tray. The emulsion was moderately evenly coated and the first attempts resulted in complete reticulation of the emulsion which then just washed off. The process was as follows: Expose Develop (About 2-3 minutes) Fix (5 Minutes) Wash in water just over room temperature The Rockland instructions specify to use cool water, so the remaining plates were washed in colder water. Using a colder rinse the thin emulsion reticulated, while the thicker emulsion seemed to be alright. I am thinking that this is happening because the plates were not fully dry- I coated them, then cooled them with a hairdryer. Perhaps the developer has not ripened long enough, but I doubt this is the case because the problems came with the final rinse. I would appreciate any thoughts on this.