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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Diagonal Scratches
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Brad Miller
Administrator
Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99
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posted 06-12-2002 08:43 PM
Generally those type of scratches come from the last roller in the takeup of the platter being too low to where the film rubs up and over the edge of the platter deck. Those rollers should always be as high as possible. Ideally film should be taken up on the platter with the bar raised (speaking of a Christie here, most platters do not offer this option). Then the bar should be slowly lowered until you reach the point where the film lays against the deck. This is the optimum position. Sure the roller can be set lower without scratching, but the lower you go, the better chance your film will get scratched if the deck becomes warped from misuse.To answer your question though, an out of line roller will make those same scratches. That's got to be a pretty badly aligned roller to do that though, so it should take no more than 2 seconds to find it. The only other thing would be a projector loop scratch, but generally those are toward the middle of the picture and not on the edge. Moving to FHF.
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Paul G. Thompson
The Weenie Man
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 06-12-2002 09:27 PM
Chad, that is why I prefer the old horizontal top MUT's adjusted to the correct fixed height, and fixed so it cannot be re-adjusted either by accident or whatever. Then, I take all those stupid rollers and springs off the horizontal top and toss them in the trash, or use them as spares. I have never seen or damaged a film with scratches by using the straight shot method, and I say "Poop on all those extra un-needed rollers!" Yes, you might be limited to building up or tearing down on the center platter, but if you plan ahead, there should be no problem. On build up night, I always keep the center platter open for building up or tearing down.
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