So I just landed some Velour Black R-2. I'll cross the fog-bridge when I get to it. Anyway, I don't have a clue about the surface though. I guess I'll just have to look at it under safelight. I'm a little confused by the letter code. Unblinkingeye's catalog of antique papers lists all Velour Black as having a canvas surface but they don't list any letter designations. I've seen Velour in surfaces, A, T, and R. The article lists Azo R as a linen surface, and all of the other Kodak R's as tweed surfaces. I don't see any letter designations for Dupont papers. I was wondering if you guys have any idea what kind of surface this is. Thanks. Edit: I guess I might as well ask the fog question now, as my only one is quite simple. How high a concentration of benzotriazole/KI/KBr in total solution can I have before I too seriously inhibit the developer? That is, does something like an amidol recipe require an excess of anti-fog for this application, and if so, could someone give me a ball-park figure for how much extra anti-fog reagent(s) I can/should try adding.