JohnFP wrote:Beta7, describe your set up just so we can all know what you are doing but here are my suggestions below. How the laser is held, where the object sets, how the plate sets, what kind of safe light you have.
Movement is only and issue with SBR (Single Beam Reflection) hologram between the glass film and the object. It sounds as if you are lying your plate directly on the coins. This is a very very stable set up. Definitely let the plate set on the coins at least 10 - 15 minutes before opening the shutter. The film you are using is very very sensitive to light. So once you take the plate out of the box it has to be safe lights only. If your safelights are not specifically good enough then it is best to get used to taking the plate out of the box and putting it on the coins in pitch dark. The film you are using is most sensitive to read and least sensitive to blue. See if you can find a blue laser pen, those cheap ones. Then take a couple and dont shine them directly on the exposing area or developing tray, but rather bounce the light off a near by wall or ceiling. Make sure there is absolutely no laser light from the laser, even though it is behind a shutter, hitting the plate. Or even bouncing off a wall or table hitting the plate. NO laser light can hit the plate, It will fog the plate quickly. Remeber, you can overexpose too, so don't up your exposure time thinking it will help. Follow the instructions exactly to the best of your ability for a start. If you do have a good blue safelight and can see the film develping in the developer, how long does it take the film to go pretty black in the devoper?
I have a wheeled kitchen table thing that is 2' x 3', with 4 garden tractor tire tubes fully inflated and sitting on top. Then I have 2' x 3' x 8" tub that is half filled with sand. I am on a slightly sloped concrete floor, and in our storage room, and there is no light getting directly on the plates (white nightlight covered by Rosco #90 underneath table). The developing sink (I have 1 utility sink with 4 dishes in there (not using the "wetting solution" yet) is a little ways away, but has a little bit of light shining through the bottom of the white sink. Could this be part of my problem?
I didn't know I could overexpose - figured that since 15 seconds didn't work, I should go up to 30. So I did (on my second plate). I guess I'll go back to 15 seconds.
I don't know exactly how long it takes, but it usually starts turning black 15-20 seconds after putting it into the developer and does not seem to get darker after about 1.5 minutes.
I think my problem might just be that I didn't let the table settle for 15-30 minutes after putting the plate down ('cause I got confused/mixed up last night
). However, I'd like to try and fix as much as possible, so I hopefully don't keep wasting plates.
*I might be able to upload pictures of the 2 plates I already shot (so you guys can maybe try to see what's wrong with them), and my setup, if that will help.