Film-Tech Cinema Systems
Film-Tech Forum ARCHIVE


  
my profile | my password | search | faq & rules | forum home
  next oldest topic   next newest topic
» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » using Lavezzi AG1 / AFG1 alignment tools

   
Author Topic: using Lavezzi AG1 / AFG1 alignment tools
Catalin Balaceanu
Film Handler

Posts: 36
From: Pascani, Iasi, Romania
Registered: Mar 2006


 - posted 07-08-2010 02:12 AM      Profile for Catalin Balaceanu   Author's Homepage   Email Catalin Balaceanu   Send New Private Message       Edit/Delete Post 
Hey guys,

after dismantling one of my projectors for cleaning, I've been having a bit of a problem with the film trap alignment in relation to the intermittent sprocket.
Searching through the forum, I found some of you recommended the LaVezzi AFG1, AG1 or Schneider alignment gauge (not an option due to higher price). Before I'd go ahead and order one of them, I'd like to know how to use them and which one would be more fit for the job.
In case this counts, the projectors I have (romanian made) have curved gate.

Thanks

Catalin

 |  IP: Logged

Catalin Balaceanu
Film Handler

Posts: 36
From: Pascani, Iasi, Romania
Registered: Mar 2006


 - posted 07-08-2010 03:06 PM      Profile for Catalin Balaceanu   Author's Homepage   Email Catalin Balaceanu   Send New Private Message       Edit/Delete Post 
Anybody?!

 |  IP: Logged

Tony Bandiera Jr
Film God

Posts: 3067
From: Moreland Idaho
Registered: Apr 2004


 - posted 07-09-2010 01:51 PM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
Hi Catalin:

Well, there is no easy answer to your question frankly. But for a curved gate setup, your best bet for alignment is the steel alignment film Lavezzi sells. (It is pricey, I paid close to $100 U.S. for it some years ago.) You simply thread it like regular film and align the sprocket and lateral rollers (if you have them).

If you are reasonably sure the lateral roller are in line, you can get pretty close sprocket alignment using standard film that is undamaged, by visually centering the teeth in the perfs. The trick is to make sure the film is perfectly steady and straight during the process.

I have used the AG-1 (which is really intended for straight traps) to align curved traps but it is not a process I can describe here and it is very time-consuming.

Hope this info helps you out..

 |  IP: Logged

Louis Bornwasser
Film God

Posts: 4441
From: prospect ky usa
Registered: Mar 2005


 - posted 07-09-2010 03:49 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
Thanks, Tony, my experience exactly. I just could not figure out a way to describe it! Louis

 |  IP: Logged

Tony Bandiera Jr
Film God

Posts: 3067
From: Moreland Idaho
Registered: Apr 2004


 - posted 07-09-2010 05:09 PM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
You're welcome Louis. [beer]

It took me quite a while to think it through so I could describe it on the web...you know first hand that something that is not really complicated but detailed is easy for us to do, but hard to explain without writing a novel.

Hopefully the info helps Catalin out.

 |  IP: Logged

Catalin Balaceanu
Film Handler

Posts: 36
From: Pascani, Iasi, Romania
Registered: Mar 2006


 - posted 07-10-2010 01:51 AM      Profile for Catalin Balaceanu   Author's Homepage   Email Catalin Balaceanu   Send New Private Message       Edit/Delete Post 
Thank you very much for your effort, Tony! That's exactly what I needed to know, as I couldn't decide between AG1 and AFG1, not knowing how each one works.
How thick is the stainless steel film, by the way? Is it like...a lot stiffer then the normal film?

Thanks

 |  IP: Logged

Tony Bandiera Jr
Film God

Posts: 3067
From: Moreland Idaho
Registered: Apr 2004


 - posted 07-10-2010 01:33 PM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
You're welcome. [Smile]

Yes the steel film is a lot thicker, it would be like perhaps 3-4 layers of acetate or 4-5 layers of mylar and it is very springy.

IIRC they give you about 4 feet of it, enough to fully thread the average projector film path.

 |  IP: Logged



All times are Central (GMT -6:00)  
   Close Topic    Move Topic    Delete Topic    next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:



Powered by Infopop Corporation
UBB.classicTM 6.3.1.2

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.

© 1999-2020 Film-Tech Cinema Systems, LLC. All rights reserved.