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Festival Tent Wall Help

Discussion in 'The Backstage' started by Liquidmetro, Apr 13, 2011.

  1. Liquidmetro

    Liquidmetro Positively Phototropic

    Hi all,

    Working on a project where one side of a tent will be a see through wall. The idea is to be able to have a semi transparent wall which let's passers by see what is going on inside the tent, then the projectors and visuals could cut in and light up the wall masking the inside of the tent. The punters will be controlling the audio inside the tent through a custom built arcade game style interface and this year the plan is to add visuals to the mix!

    Rough idea is to have 2-3 projectors running off a TH2GO rear projecting from inside onto the wall. We have a chippy on board and we will all muck in to build it etc.

    Initial thought was sharkstooth scrim but may get damaged if a punter leans against it too hard (it's a festival!) so thinking of thick-ish perspex either sandblasted or (if we can get a good price) 3M Vikuiti film.

    The tent will mainly be in use during late summer evening and night.

    Would really welcome any input on this. :up:

    Here is a teaser from past years:
    Last edited by a moderator: Aug 14, 2013
  2. sleepytom

    sleepytom VJF Admin

    Sharkstooth - just budget to replace it each morning. It is fairly cheap stuff really, Perspex on the otherhand is super expensive. 3x2 meter sheet of Perspex thick enough not to break if you give it a medium kick will cost several hundred pounds.

    The other option is debris netting, this is very cheap. Really strong, waterproof, flame retarded and easy to rig.
  3. Liquidmetro

    Liquidmetro Positively Phototropic

    As always thanks Tom!

    I guess it will come down to cost either replace sharks tooth daily or install perspex once........

    Debris netting is a great shout, will have a look at this. Initial search is £70 for a 2mx50m roll. The company is TILDENET for others in the future. Bargain! :jump:

    Flame retarded hehehehe
    Last edited: Apr 13, 2011
  4. Liquidmetro

    Liquidmetro Positively Phototropic

    TILDENET based in bristol and have agreed to let me sample both the prioducts that seem suitable:

    - Flame Retardent Sheeting (finer weave).
    - Flame Retardent Debris Netting (larger weave).

    Hoping to have the projectors high enough so there aren't visible hotspots. Will post my findings.
  5. sleepytom

    sleepytom VJF Admin

    Retarded flaming....

    Just like vjf then
  6. Liquidmetro

    Liquidmetro Positively Phototropic

  7. psychomonkey

    psychomonkey Visuals from the flipside

    For a cheaper cost you could check out a fabric shop and the lining for shorts or swiming trunks works like sharks tooth and allows light to come through the small holes.

    Or the classic lycra option for cost options both nice cheap options and easy to replace cheers Psycho Monkey :)
  8. mashie niblick

    mashie niblick bristol vj

    Hi Adam

    Depending how you get on with Tildenet an alternative source local to you used to be "The Blinking Lamp Company" in Avonmouth Way. In December their price for flame retardant white 50m x 3m debris netting (stretches to 3.8m+) was £45 plus VAT per roll (available to joe public over the counter, credit card or cash) and they had it in stock.

    Couldn't get on to their website tonight to see if these prices still stand but if you want to check to see if they're still there try 0117-982-8180 in the morning, that number worked just before Christmas.

    speak soon

  9. deepvisual

    deepvisual visually challenged

    is it going to work though?

    you can only get good back projection is there is no light behind the screen.
  10. sleepytom

    sleepytom VJF Admin

    that will not be the issue as lighting is err minimal in the drum machine.

    the problem you'll have is projection depth vs masses of people standing in the beams.
  11. Liquidmetro

    Liquidmetro Positively Phototropic

    Thanks peeps.

    Will check that company Mashie, going for sponsorship deals to keep costs minimal!! We provide a video and images of the logo used at the event and they can remarket their industrial product as a creative/artistic one. We save £70......win win (fingers crossed). Worth a try.

    No worry on depth as we have arranged for the tent to be extended out with a fake fronting. This void between the actual tent and the outside will only be for projection so no roaming heads clipping image etc.

    The projectors will have 0.8:1 lenses so rough calculations we will get a 8' wide image with a 6' throw per projector. Going for 2 projectors 4:3 to get a 16' x 6' image.

    After a meeting last night I think we might try cameras too. E.g. 2 cameras setup facing in (B2B with each projector) and going into Modul8 before out to a DH2GO. This way we can project the image of inside as if the 16' x 6' screen was 100% see through. This is the backup if we have lighting issues. I have some iSights knocking around - might need to pair them with some led lights as they're not great in low light.

    However, we are going to sync the main audio machine which runs the DMX internal lighting so when master opacity in Modul8 is on zero, internal lighting (which is low anyway) will be on 100%. This way when the main lighting is off the visuals will light up the inside and vice versa.

    Bit of a mind dump for now....will keep you posted!
  12. sleepytom

    sleepytom VJF Admin

    bear in mind that 0.8 lenses are on-axis so you need to have the projector directly centered in the middle of the screen on both H+V axis. This is important as if you try and offset the projectors and lens shift / keystone them you'll find the lenses cause bad distortion at the edges - this makes it very hard to do a perfect side by side lineup with 0.8 lenses.

    also as i'm sure your aware the numbers of people in that field can be excessive - expecting to be able to have a "dead area" in the void between the tent and the frontage is optimistic, if you want to be able to see people inside from outside that implies no significant barrier between the people inside and the projection void, thus you'll have a load of munters in the projection void!
  13. Liquidmetro

    Liquidmetro Positively Phototropic

    Thanks mate, yeh hoping to be dead on axis on purpose built boxes. Only possible exception is we may hang them to avoid any hotspot and keep them out the way of the line of sight through. In this case we will only be looking to adjust vertical keystone as little as possible.

    Have been using this handy tool: http://www.sanyo-lenscalculator.com/

    The void is boxed in from all sides except the 2 windows and is within the overall tent size. Hoping to use lighting or additional projection inside to light up the inside and knock out the visuals seen externally.

    We have pitch details and the gap between us and anyone at the front is the best we could have hoped for. Hoping they'll sort out crowd management a bit better this year!
  14. sleepytom

    sleepytom VJF Admin

    Yeah they have that under control, it's being done by the same people who are in charge of making sure everyone gets a fair wage..

  15. Liquidmetro

    Liquidmetro Positively Phototropic

    So here is the result! It's towards the end of the vid! Notice my amazing edge blending without any software :D

    Last edited by a moderator: Aug 14, 2013
  16. stickygreen

    stickygreen this is my custom title

    Great work Liquidmetro

    that looks like a great project to be involved with
  17. RayV

    RayV =] ++ [=

    yes!! I second Mr StickyGreen! Great idea and project :) well done.

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