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Author Topic: Christie Brain Scratch Mystery Mike Olpin Chop Chop! Posts: 1852 From: Dallas, TX Registered: Jan 2002 posted 06-03-2007 02:11 PM                     Last night I received a complaint that Mr Brooks was scratched. When I went to investigate it, I found nothing off roller or out of path. The print looked severely scratched, 2 or 3 base side scratches and one emulsion side scratch. I figured it must have happened on a previous show, however when the show let out, what a found on the brain surprised me. What is this? It looks like a string of emulsion leading from the bone to the two small guides near the rollers. This is on an older style AW3.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 06-03-2007 05:49 PM                     The only thing that could cause scratching in a Christie brain is if the film is not seated properly between the two white fixed stripper poles. However that is almost impossible given the picture you showed since you have the new style poles in there that have a gentle tapering to them as opposed to a squared off edge.  |  IP: Logged Alex Grueneberg Expert Film Handler Posts: 125 From: Chicago, IL Registered: Aug 2004 posted 06-03-2007 07:04 PM                        I had some metallic cue tape get stuck on one of the posts once, but it only caused a minor base scratch. How long has the print been running on that platter/brain? I must say that is very odd. ps: your brain looks super clean  |  IP: Logged Brian Guckian Jedi Master Film Handler Posts: 594 From: Dublin, Ireland Registered: Apr 2003 posted 06-03-2007 08:09 PM                     It's a long shot, but could there be a groove cut into the inside edge of one of the "bone" posts? I've seen this happen before on the AW3. Over time, the film can cut a groove into the post and end up sitting into that groove every time the film is run. Ultimately, you can end up stripping the emulsion at the edges, and the film can hop into and out of the groove depending on how the platter timing is set up. Although I've never seen it, perhaps that could account for the scratching as the film rubs against the burred plastic of the groove. However you don't mention seeing a groove; usually it should be noticeable, so it's likely there's another explanation.  |  IP: Logged Scott D. Neff Theatre Dork Posts: 919 From: San Francisco, CA Registered: Oct 1999 posted 06-04-2007 11:40 AM                        quote: Alex Grueneberg ps: your brain looks super clean You apparently don't know Mike very well.  |  IP: Logged

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