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Author Topic: Filmguard and old prints. Leo Enticknap Film God Posts: 7474 From: Loma Linda, CA Registered: Jul 2000 posted 01-25-2003 10:11 AM                        Jack Roe has never had any problem with selling it to me in single bottles. Just as long as you don't sniff the stuff I can't see that there's any health and safety issue with fumes. The only health and safety issue I can think of is that, given that Brad's MSDS data sheet states that it contains petroleum distillates, I guess Filmguard would probably make quite an impressive bonfire given the chance. For that reason (and several others) I have not ever tried using Filmguard on nitrate. But I can't see that Filmguard is any more dangerous than other flammable liquids that are routinely kept in the home or workplace, e.g. white spirit. Just don't smoke whilst cleaning films and you'll be fine!  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 01-25-2003 03:26 PM                     Yes to all of your questions Stephen. Quart bottles is how they are sold. There is a 4 page instruction manual enclosed. No special precautions are needed in a typically ventilated room, just don't drink it. And FG is less flammable than every other film cleaner and commonly found cleaning item in a typical projection booth.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 01-26-2003 10:51 AM                     Film Guard has successfully been applied to nitrate as well so drink up! I believe Brad has stated that it has no bad effects on striped magnetic film either...in fact, it cuts down on the friction effects of the strips passing over the heads...remember, it isn't the contact with the heads that makes the sound...it is the induction of the charged particles passing over the head that makes the sound...the induction properties are still there. There is probably some measurable loss with the ever so slight spacing from the layer of film-guard but we are on the molecular level here. Steve  |  IP: Logged Leo Enticknap Film God Posts: 7474 From: Loma Linda, CA Registered: Jul 2000 posted 01-30-2003 02:07 AM                        quote: I believe Brad has stated that it has no bad effects on striped magnetic film either...in fact, it cuts down on the friction effects of the strips passing over the heads I can believe that in the case of newer striped stock in a good condition, but would be nervous about shrunken stock or where there is oxide shedding. On 'dry' stock, oxide will part company with the film altogether and usually settle in the area of film path around the scanning drum and head. A good clean after each reel is all that's needed to clear up the mess. But if particles of oxide get suspended in FG, then I can imagine (i) their contaminating the picture area and appearing on the screen as dirt and/or (ii) a sticky goo consisting of FG and oxide building up on the heads. In my experience treating older elements with FG by hand needs a much thicker coating than would be applied by an automated media pad system to achieve a worthwhile result, which is likely to make that 'ever so slight spacing' a bit more significant.  |  IP: Logged Carl Martin Phenomenal Film Handler Posts: 1424 From: Oakland, CA, USA Registered: Feb 2002 posted 01-30-2003 03:27 AM                        so about filmguard and splices. i understand that in normal usage splices will not be compromised, but what if filmguard is hand applied to film ends as a cleaner, say to get off old tape residue. will a subsequent splice then hold, even if made over the still-wet end of the film? if filmguard will take the old glue off, won't it dissolve the new glue under the splice? is there a good way to locally un-filmguard the film if necessary, aside from waiting a year for it to evaporate? carl  |  IP: Logged John Anastasio Master Film Handler Posts: 325 From: Trenton, NJ, USA Registered: Sep 2000 posted 01-30-2003 05:22 AM                        If you simply wipe off the excess after you've cleaned the area, there shouldn't be any problem. The thing that dissolves the adhesive is the distillate in FG, and if you wipe the area dry, it evaporates pretty quickly, leaving a nice surface to which the new tape will adhere very nicely, I've found.  |  IP: Logged Leo Enticknap Film God Posts: 7474 From: Loma Linda, CA Registered: Jul 2000 posted 01-30-2003 05:46 AM                        If you're applying FG by hand as a cheap alternative to ultrasonic cleaning, you do need to use it in the sort of quantities that will affect tape joins, in my experience. My preferred solution is to replace tape joins with cement joins and FG the element after repair. But if that isn't possible, then as John notes, you need to wipe all traces of FG from the surfaces on which the tape is to be applied.  |  IP: Logged

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