Ground Glass Cleaning
>Published : 26th February 2005
>The best way to clean ground glass when it is smeary, fingerprints?
>Reason why I asked it, is that this is usually noticed whilst testing and the rental techs take care of it. This coming job I am going to have the gear a few hours before shooting call. From former experience with that rental place (Middle East) I am pretty sure the ground glass is going to need some cleaning, last November the smear was minimal and I was not to sure if I could use a lens cleaner, so I did not do it.
>Anyone any suggestions, the ground glasses are all Arri made ones, camera type 435.
>Emmanuel from Munich
>I worked as a trainee, in a rental house a few years ago and they had me cleaning ground glasses from time to time.
>Believe me or not but just using normal dishwashing liquid in perfectly all right. Was your hands. Then under a running tap, gently apply the washing liquid and rise off. After that just use ken air or something similar to dry the ground glass.
>Just a note I did only do this on Sr2/3 and Arri 3 ground glasses, not sure about the 435 one. Its been a while since I saw one.
>Hope it helps. I’m sure my suggestion will outrage many professional techs out there, but believe me it works.
>Good luck with the shoot.
>If it is an etched glass then you are only dealing with a piece of glass. Dish soap will do a fine job of removing the oils. Lens cleaner should do the same too.
>If the glass has some printed markings then you may wind up cleaning off the markings with some solvents. Dish detergent or good old soap should not bother these.
>Do avoid scratching the glass with any chunks on your fingers, but a good washing should prepare you well.
>All our ground glasses for our VV cameras are etched and have no inks, they clean up real well. Occasionally we do custom markings with a pencil, those you would wind up cleaning off.
As always this computer will self destruct in 30 sec.
>I use alcohol (denatured one, no stuff in it), it works brilliant.
>When you dust off it, beware not to do it just in front of it but blow a little bit outside as you don't get these white traces, you'd have to clean again