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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Bottom up lacing (Page 3)

 
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Author Topic: Bottom up lacing
Scott Norwood
Film God

Posts: 8146
From: Boston, MA. USA (1774.21 miles northeast of Dallas)
Registered: Jun 99


 - posted 02-18-2008 07:30 PM      Profile for Scott Norwood   Author's Homepage   Email Scott Norwood   Send New Private Message       Edit/Delete Post 
So, Brad, what do you advocate doing when running a print reel-to-reel that will only be shown once? Most new prints just barely have enough leader to thread with "8" in the gate and give a few wraps around the takeup hub.

Obviously, it's a good idea to add leader if a print will be shown multiple times, but I normally like to take up onto shipping reels (or cores on split reels) for a once-only show, and most booths don't have an endless supply of frameline leader (old trailers would work, but would likely confuse the next person to get the print).

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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99


 - posted 02-18-2008 08:58 PM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
That's a judgment call Scott. If you are running a print that you have any belief may end up running reel to reel again (like an EK print, a festival print, etc) then absolutely you should add extra leader, even if it is junk trailers with the ends labeled clearly so as not to confuse the next guy.

If you are reasonably certain that the print will go straight to a platter house after you are finished with your one-off screening, you are probably better to be as careful as you can and just run on the existing leaders. Its sort of an effort vs. benefit thing.

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Stu Jamieson
Jedi Master Film Handler

Posts: 524
From: Buccan, Qld, Australia
Registered: Jan 2008


 - posted 02-19-2008 03:27 AM      Profile for Stu Jamieson   Email Stu Jamieson   Send New Private Message       Edit/Delete Post 
I've heard a few of you guys refer to this "frameline leader" which presumably is something you buy. We just make our own leaders from disused trailers and ads and countdowns which we salvaged when we top and tailed those trailers and ads.

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Peter David Bruce
Expert Film Handler

Posts: 187
From: East Anglia -England
Registered: Aug 2007


 - posted 02-19-2008 03:51 AM      Profile for Peter David Bruce     Send New Private Message       Edit/Delete Post 
We have about 20 of the proper leader, BUT we often have to do the same by making up our own from heads and tails of trailers. Our gash bin is brimming with bits that are perfect.

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 02-19-2008 05:22 AM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
quote: Stu Jamieson
We just make our own leaders from disused trailers and ads and countdowns which we salvaged when we top and tailed those trailers and ads.
A small circuit that I work for when I began with them 6 yrs ago, this procedure was previously performed - using old trailers as threading leader since there was no white framed leader to speak of to be found at any premises.

BUT, were they having DTS playback issues like mad .... I soon remedied this with telling the office people on purchasing white framed leaders and with my proper instruction on how to begin the shows more smoothly...as mentioned below:

With this procedure of using junk film, and you're doing DTS trailers or going into a DTS movie from the beginning: thing you have to watch out for is that if timecode is sensed by the reader before dowser opens, the player will freeze due to automation telling the processor to open in default optical and the pulse from the player has already been executed. Thus your show will default to optical playback and you have to punch the processor to do DTS manually.

Why all of this is when you use the feature's attached leader, or use a leader that has no reference markings to allow time for the dowser to open before timecode is sensed by the player...

....or just don't use trailer discs, or make sure that the first trailer doesn't correspond with any discs in the player. Then, you'll easilly open in default optical and let the timecode that matches the disc, pulse the processor to swing into DTS mode.

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Blaine Young
Master Film Handler

Posts: 477
From: Kirkland, WA, USA
Registered: Sep 2006


 - posted 02-19-2008 09:27 AM      Profile for Blaine Young   Email Blaine Young   Send New Private Message       Edit/Delete Post 
The DTS thing has tripped us up here a couple of times. I'll try to use older trailers so the audio isn't on the trailer disc - or simply splice the junk film on backwards. That way the DTS reader won't see the timecode.

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Kyle Masson
Film Handler

Posts: 2
From: Centerville, MA, USA
Registered: Apr 2007


 - posted 02-19-2008 02:01 PM      Profile for Kyle Masson   Email Kyle Masson   Send New Private Message       Edit/Delete Post 
I notice on the the projector threading tips that Brad recommends having the bottom loop barely grasp the pad roller. When I try this on a Christie P35GPS, the loop makes a flapping noise while the motor is running. Is that normal or am I making the loop too small?

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 02-19-2008 03:42 PM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
Kyle, on the P35 units, with the pad roller open across the middle constant speed sprocket, the loop from the intermittent assembly should touch the front roller on that pad roller assembly, then back off two sprocket holes over the sprocket, then close the pad roller assembly. This should give you the proper lower loop size.,

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Peter David Bruce
Expert Film Handler

Posts: 187
From: East Anglia -England
Registered: Aug 2007


 - posted 02-19-2008 05:13 PM      Profile for Peter David Bruce     Send New Private Message       Edit/Delete Post 
but if you dont HAVE dts sound... i guess its safe to do this.?

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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99


 - posted 02-19-2008 06:33 PM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
quote:
Kyle, on the P35 units, with the pad roller open across the middle constant speed sprocket, the loop from the intermittent assembly should touch the front roller on that pad roller assembly, then back off two sprocket holes over the sprocket, then close the pad roller assembly. This should give you the proper lower loop size.,
Monte, please don't give out bad information. Your reply does not work because the size of that lower loop is changing with every pull down, so going "2 more" is hardly accurate. On the older units this can result in loop scratches and on newer units this can destroy the SRD soundtrack.

Kyle, thread per the detailed instructions in the tips section and you will not damage film. Some filmstocks do tend to be a little more noisy than others.

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 02-20-2008 12:21 AM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
Okey..can do Brad. Got hung up with lacing a P35 as lacing up a Century machine do to the lower loop similarities. - Monte

EDIT: even though, there should be a theading diagram in the P35 manuals...to show proper loop sizes and how to build them ...

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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99


 - posted 02-20-2008 09:31 AM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
There is Monte, and it is copied at the end of the "threading 101" in the tips page too.

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