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static discharge

 
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scifan



Joined: 21 Dec 2005
Posts: 21
Location: saskatchewan

PostPosted: Sat Dec 31, 2005 5:59 pm    Post subject: Reply with quote

I have a 22 graflex roll film holder for my rb graflex series b.The problem is the plastic darkslide.when you pull it out it generates static discharges that make quite a show in a dark room,not to mention fogging the film in the holder.Does anyone know what to do about this.
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glennfromwy



Joined: 29 Nov 2001
Posts: 903
Location: S.W. Wyoming

PostPosted: Sat Dec 31, 2005 8:36 pm    Post subject: Reply with quote

Try waxing it. It helps to pull it out really slowly when working in a low humidity atmoshere, which sounds like what you have. Also, you might try pulling it out just a little, then grab it by the plastic part to finish pulling it. That should ground it, through you, to the metal body and eliminate the sparks.

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Glenn

"Wyoming - Where everybody is somebody else's weirdo"
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C. Henry



Joined: 13 Dec 2005
Posts: 360
Location: North East Georgia, USA

PostPosted: Sat Dec 31, 2005 8:52 pm    Post subject: Reply with quote

If you can locate any old 2 1/4" x 3 1/4" Graphic Film Holders you might find one with a metal dark slide. That dark slide should fit the roll film holder in place of the plastic one and would not generate static electricity. The film holders used both metal and plastic dark slides at different times so you might have quite a search.

C. Henry
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scifan



Joined: 21 Dec 2005
Posts: 21
Location: saskatchewan

PostPosted: Mon Jan 02, 2006 4:06 pm    Post subject: Reply with quote

Thanks for the info.Why would they have ever used plastic darkslides given the problem with static electricity?
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glennfromwy



Joined: 29 Nov 2001
Posts: 903
Location: S.W. Wyoming

PostPosted: Tue Jan 03, 2006 7:02 pm    Post subject: Reply with quote

I have never had a problem with these slides. Sounds like it's just an unusual situation. Are you sure your body was not charged with static? Walking on carpet, for example. Try grounding yourself while holding the film holder before pulling the slide. Just touching a doorknob or light switch should do it. BTW, a majority of these slides were not plastic, but a hard rubber composite.

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Glenn

"Wyoming - Where everybody is somebody else's weirdo"
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Emil Zelasko



Joined: 03 Feb 2004
Posts: 19
Location: Cleveland Ohio

PostPosted: Thu Jan 19, 2006 5:30 pm    Post subject: Reply with quote

There are spray on/wipe off products (i.e. anti-static sprays) that we used in meter labs, designed to eliminate static build up on analog panel meter faces. It went on clear and did not really seem to leave any kind of residue (oily or otherwise).
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