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ND on windows revisited

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Rich Rubasch
ND on windows revisited
on Jul 11, 2019 at 9:44:26 pm

Hi all....well we went ahead and put ND on large windows and left it up for a couple days....here was a message I got after we had taken it down:
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The owner complained about the ND filter leaving smears on the communal areas windows. As it was adhered with Windex, in my mind the windows should have been bloody spotless but I did check and to be fair, they weren't kidding. I paid for them to be cleaned but the cleaners even said: "Oh yer, these things'll eat into the grain of the glass. If you leave them up too long it can do permanent damage." Sooo, yer. A little worried about the state of the windows in Room 57 once we take down the ND.
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Anyone ever see this? I'm taking a look tomorrow and will try a bit of cleaning to see what it is, but we left up about 5 large windows for 2 weeks and I am a bit nervous when we try to pull it down!

Rich Rubasch
Tilt Media Inc.
Video Production, Post, Studio Sound Stage
Founder/President/Editor/Designer/Animator
http://www.tiltmedia.com


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Chris Santucci
Re: ND on windows revisited
on Jul 21, 2019 at 1:41:51 am

No, I have never seen this or even heard of it. I find it hard to believe that an actual glass surface would be in any way compromised by application of gel. If we were talking about a resin or plastic surface, maybe. There may have been residue, but it would just be sitting on the surface of the glass and would squeegee right off with some water.

http://www.santucci-cinematographer.com


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Rich Rubasch
Re: ND on windows revisited
on Jul 23, 2019 at 7:14:31 pm

Turns out the gel that had been on for a couple weeks did have a hard time pulling off and we had a bunch of small pieces we had to scrape off but everything worked out fine and the glass looks great.

Lawsuit averted...

Rich Rubasch
Tilt Media Inc.
Video Production, Post, Studio Sound Stage
Founder/President/Editor/Designer/Animator
http://www.tiltmedia.com


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Mark Suszko
Re: ND on windows revisited
on Jul 24, 2019 at 8:59:00 pm

I wonder if some kind of separation product like no-stick cooking spray would have helped... but then again, it may have made the view thru the glass more distorted as well. Maybe using car wax first on the glass and buffing it?...

Modern windows often are laminated layers of alternating plastic and glass components. But I can't imagine the indoor facing surface to be a plastic one.


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Chris Santucci
Re: ND on windows revisited
on Jul 25, 2019 at 2:36:51 am

Are you saying gel stayed on windows for a couple of weeks just by using Windex? Hmmmm...

I've never been able to get gel to stay put longer than about 24 hours using soapy water.

http://www.santucci-cinematographer.com


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