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Fake cyc / scrim

Discussion in 'Lighting and Electrics' started by arfinator, Mar 28, 2008.

  1. arfinator

    arfinator Member

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    Hello,

    So I am doing a very low budget show (as usual) and I need some sort of back drop, cyc, thing that I can shoot deep colors onto. Because of the low budget nature of the show, we are using white butcher paper.

    I was planning on using stip lights to light this backdrop (shot from the floor, up), but the last time I tried this exact same thing, my gels would constantly melt, smoke, and the color would end up becoming so light that it was just a white back drop.

    Does anyone have any suggestions on how to make these colors very deep and to how to avoid melting gels?

    Any other suggestions that might help me?

    Thank you very much,

    Hess Smith
     
  2. avkid

    avkid Not a New User Fight Leukemia

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  3. mbandgeek

    mbandgeek Active Member

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    somewhere on this site, I read that a sewing machine without the thread will have the same effect.
     
  4. Sean

    Sean Active Member

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    What kind of fixtures? What brand gel?

    I will disagree with what has been recommended above--pouncing the gel only makes little holes. The gel absorbes heat energy. It will do that with or without hole, as it's a factor of the saturation of the color (the colors of light being "blocked" by the gel are turned into heat).

    Try getting some Lee High Temp (HT) gel, or try GAM. GAM tends to be a bit better at handling heat.

    --Sean
     
  5. David Ashton

    David Ashton Active Member

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    I hope you are using fire-proof butchers paper as the whole idea seems extremely dangerous to me.
     
  6. arfinator

    arfinator Member

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    Thank you very much for your replies. The fire issue, i dont believe, is that pressing in this situation, as the lights won't actually be that near the cyc--only shot up at it.
     
  7. Grog12

    Grog12 CBMod CB Mods Premium Member

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    Here's another thought.....Stop using such saturated gels!!!!! Just because you can mix RGB doesn't mean you always have to throw primaries in your cyc lights. Make choices.
     
  8. Footer

    Footer Senior Team Senior Team Premium Member

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    If they are R40's strip lights, they will burn out any saturated gel you put near it. I know you don't want to do it, but go with a less saturated color.
     
  9. Les

    Les Well-Known Member

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    Back in high school we had these huge signs in the hallways made up of 2 pieces of butcher paper making about a 4x8 sized poster. One afternoon our school almost burned down because some kid decided to set one on fire. By the time it set off the alarms it was a pretty good sized fire almost reaching the ceiling and no one was to be found. I would never use it in a theatre as a cyc. Whether lights are near it or not is irrelevant. Or at the very least as allthingstheatre said, go with the fire resistant kind. Otherwise RENT.

    As for the striplights, have you looked in to renting or borrowing roundels? They would be your best solution for this type of thing. Check with older theatres for borrowing. Especially some that may have had a recent equipment upgrade. A lot of the times, they keep the roundels from their old striplights in a box just in case.
     
    Last edited: Mar 29, 2008
  10. LD4Life

    LD4Life Active Member

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    As everyone has said before, saturated colors are going to burn out quicker than anything in those things. Roundels are your best option. I personally try to use saturated gel as little as possible, as burnout is such a big issue. I actually watched a dark green Lee (can't remember which exactly) melt. It was interesting. I warned the designer against using such a dark gel in a fresnel, but the director wanted that color, so it got used. She turned on the light to focus, and I watched as the gel crumpled and burned through. It was a very interesting sight. Probably was about 45 seconds from start to finish.
     
  11. David Ashton

    David Ashton Active Member

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    The fire issue is always pressing in any situation, don't use a paper cyc, it is too dangerous.
     
  12. arfinator

    arfinator Member

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    OK. Paper cyc is out. I didn't think it was that much of an issue, btu apparently it is. Thank you for the warnings.

    In my venue, we have to rent everything because there is nothing, so would roundels be something clearwing would have? (I'd assume so)

    Thank you.
     
  13. TupeloTechie

    TupeloTechie Active Member

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  14. arfinator

    arfinator Member

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    yeah that's what I found and I that that if that would work, why not butcher paper.

    I also found RoscoFlamex C26 which I could coat on the paper and then that would make it flame retardant.

    Yes? Suggestions?
     
  15. porkchop

    porkchop Well-Known Member

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    I'm just going to safe first off, stuff happens paper cyc would scare me.

    When I was in high school the company I worked for insisted that we use a sheet color saver. It was just a clear sheet of gel between the lamp and the colored gel. A quick look at Rosco's website and it looks like Roscolux #00 is probably what we used. I don't know a whole lot about how much it helps, but my old boss swore by it.
     
  16. SerraAva

    SerraAva Active Member

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    You are talking about Rosco Heat Shield porkchop. While heat shield does help, it gets more effective if you have space in between the gel and the Heat Shield to allow more heat to escape. However, even with minamal space, heat shield does indeed help.

    As for gels burning through, I have seen that a lot. One time, someone was using par 64s as up lights. We put a dark green gel in one, and watched it melt away right onto the lamp. It was spitting green smoke for about 15 minutes or so because the gel dripped onto the lamp. It looked neat, told everyone who walked by it was for effect :lol:.
     
  17. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

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    I have to agree with Sean here. Every time I've tried "pouncing" color, it just gives a place for the color to start to melt by lessening the mechanical strength, and one can watch as the holes get bigger.

    Apollo Gel Shield might help, and it's fairly rigid, so it could go toward the lamp between the holder and the R40 frame, and then the color in the frame as normal. This gives approx. a 1/4" airspace, but no convection currents.

    Less saturated color is probably the best option. R68 instead of R80 or R83, R26 instead of R27, and R90 instead of R91. (Or the Lee HT or Apollo/GAM equivalents). Or ColorBlaze72s.
     
  18. Footer

    Footer Senior Team Senior Team Premium Member

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    That is the only option after all...
     

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