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This topic comprises 2 pages: 1 2
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Author
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Topic: Threading Tips 101
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Kyle Connolly
Film Handler
Posts: 13
From: Ottawa, Ontario, Canada
Registered: Apr 2001
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posted 05-22-2001 01:56 PM
I like the threading tip in the tips section, however there is one thing in it that I think may be wrong. It demonstrates threading backwards to stop the leader from ever touching the floor to keep it clean. However, it says to thread through the failsafe / cue detector before threading the rest of the projector. That, I find, is dangerous.About a month ago at my theatre, the failsafe in projector 5 was dirty I guess, and I didn't realise it, but the little green light that tells you film is in the failsafe was on without the film. A projectionist was threading the projector, and it just started! His hands were in it! The 10 beeps from the automation BEFORE starting aren't really audible in the noisy booth. Anyway, this sort of thing could happen all the time if you thread the failsafe first. I guess it would not be much of a problem if you had to manually start the projector, but our automation starts it automatically at the film start time. I just wanted to see what everyone's take on this is. ------------------ -@-
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John Pytlak
Film God
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 05-24-2001 08:09 PM
By all means, KEEP THE LEADER OFF THE DIRTY FLOOR when threading/lacing the projector. "Bottom-to-top" threading works well for many, pulling the leader from the platter to the top guide roller of the projector, past the soundheads and projector, and right back to the platter takeup without touching the floor, then finally threading the projector and soundhead(s) bottom to top.Josh's pillowcase idea is like a film editor's "trim bin" --- it keeps the film from contacting a hard surface that may scratch it. But launder the pillowcase frequently to keep it from accumulating lint and other debris that will get on the film. Any dirt picked up by the leaders will contaminate the platter and projector, and work its way into the print, leaving lots of UGLY black dirt specks on projected image. ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Eastman Kodak Company Research Labs, Building 69, Room 7419 Rochester, New York, 14650-1922 USA Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243 E-Mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion
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Jason Black
Phenomenal Film Handler
Posts: 1723
From: Myrtle Beach, SC, USA
Registered: Nov 2000
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posted 05-25-2001 12:58 AM
I dont' see the point of threading UP.. I have threaded DOWN for 13 years now... My leader never touches the floor. Using Strong platters, I go from payout- bypass the projector- to the take up (T/U platter switch is off, btw) then go back and thread the projector. After checking all loop sizes/framing window/etc, I go back to turn the take up platter on to pull final tension on the 'dancer arm'. All the while, I have my hand slightly on the platter in the event the dancer hangs and the platter doesn't stop. I can either stop it by hand until the switch can be cut off, or I can disengage the motor. I can't remember that ever happening, but if it did, I'd be ready... YMMV, ------------------ The early bird may get the worm, but the second mouse gets the cheese!
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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 05-25-2001 08:34 AM
Jason, Does any part of the leader hit the floor when you are threading the actual projector head? To keep it from hitting the floor, you must be securing the film in some manner. That's really all that is important.Demetris, Yes, threading UP is much, much quicker than threading down if you learned that way or have the ability and/or desire to change your ways. (I say "ability" because some people just never can seem to get the hang of it, no matter how hard they try once they have learned how to thread top to bottom. Of course those are also the same people who care enough to make damn well sure that the leader never comes into contact with the floor, so it is never an issue. ) The trick is turning the intermittent to a certain point in it's travel (not just the dead spot), then actually framing on the holdback sprocket, and working your way up from there. When you have reached the top, all of your loops are perfectly set. 10 seconds is plenty to thread a typical 35mm projector when done in this fashion...and that is not sacrificing "in frame" threading or exacting loop sizes either. Just a couple of days ago Ethan was visiting me in a booth and decided to secretly time me. He said I had threaded the entire platter and projector in under 30 seconds counting from the point I finished rewinding the media cleaner up until the timer was set. I didn't even know he was timing me, but I originally learned to thread down and after forcing myself for a week to thread "up" (to get past the aggravation of the awkwardness) I can now thread much faster than I ever could when threading from top to bottom. The people I train have usually never touched a piece of film before and they just don't know any different. To fully understand, you will just have to force yourself to do it for a few weeks until you get good at it. Then you will understand why it is a more efficient way to thread. Rarelly do I ever have to reopen a pad roller to resize a loop, for they are perfect the first time (which also saves wear on the arms).
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Bill Langfield
Master Film Handler
Posts: 280
From: Prospect, NSW, Australia
Registered: Apr 2001
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posted 05-25-2001 11:09 AM
I agree with Jason.Every location I work at loops the leader through projector rollers (top/bottom). Then lace top to bottom. Sometimes the film (leader)MAY touch the floor, but floor should be clean. There seems ongoing thought that bio floors are DIRTY, I fail to understand that. They should be mopped/vacuumed every night. At the very least get one of those $2 static mops and pass it over the the whole projection room, paying attentiomn to where the film might come close to the ground. Film is a dust/lint magnet. Remove the dust before the film finds it. Bill.
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John Pytlak
Film God
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 05-25-2001 12:51 PM
Bill Langfield said: "Film is a dust/lint magnet."That was true before the introduction of Kodak's VISION Color Print film, which has a transparent conductive backing layer that greatly reduce the static charge that can attract and hold dirt to film. If you have an old triacetate or polyester print made before about 1998, compare it to a new print on Kodak VISION Color Print film. Quickly pull a piece of the film through your fingers to try to put a static charge on the film, and then hold it near cigarette ashes or dust. The old film will attract the dirt, much like the old static demo of putting a plastic comb through your hair and attracting things to it. The Kodak VISION color print film will not hold a static charge, and stays much cleaner. Regardless, I do agree it is always good practice to keep any film away from dirty surfaces. Many threading leaders are "dust magnets" since they are NOT made on the new Kodak VISION stock. ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Eastman Kodak Company Research Labs, Building 69, Room 7419 Rochester, New York, 14650-1922 USA Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243 E-Mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion
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