DIY black screen tests - Page 13 - AVS Forum
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post #361 of 654 Old 04-27-2014, 04:07 PM
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I can't agree more!
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post #362 of 654 Old 04-27-2014, 05:42 PM
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Quote:
Originally Posted by TinnEars View Post

Your tests thus far have been amazingly helpful. I anxiously await your tests with the white material!! We all owe you some beer!!smile.gif

I Second That smile.gif
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post #363 of 654 Old 04-28-2014, 06:18 AM
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Yeah. This one!!!

 

Was at a Party at the weekend, where we had a beer sommelier and she brought this beer along. We were advised to drink it along with chocolate mousse, which was just fantastic!

 

It probably would also give a decent black layer ;)

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post #364 of 654 Old 04-28-2014, 06:29 AM
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Originally Posted by cylab View Post

Yeah. This one!!!

Was at a Party at the weekend, where we had a beer sommelier and she brought this beer along. We were advised to drink it along with chocolate mousse, which was just fantastic!

It probably would also give a decent black layer wink.gif

I haven't tried that beer but my favorite is Mackeson's Triple Stout. I can't find it in my area though.frown.gif
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post #365 of 654 Old 04-28-2014, 03:28 PM
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Originally Posted by Mil3 View Post

I believe it is only important to find top layer in that width.. Base level, oralite could be merged without that being visible..

Hmm, I am afraid this will not be so easy. Just tried it with small samples, one overlapping and one edge-to-edge. The overlapping one will create a small bulge and the layer on top will not adhere to the base-layer at the jut, so there will be a visible line. The edge-to-edge version works better (especially if you create a version with a hexis layer), because the base-layer stays flat, but its probably difficult to do large-scale. You need at least have a rigid board you can attach the base-layer with wet application to, so that you can reposition it a bit on the water film. Then you would need to wipe out the water away from the joining edges to the inside of the adjacent films, so that the joint is fixed first.

 

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Originally Posted by Mil3 View Post

But I think wall art is 48" max

Yes, unfortunately the Wall Art is 48" max, but the Oracal 640 Transparent Print Vinyl comes at slightly better 55". Its properties as an anti-glare layer are not as perfect as the Wall Art, but probably good enough. Still dreaming of an available good 60" matte diffuser which would make the Wall Art obsolete though...

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post #366 of 654 Old 04-29-2014, 07:15 PM
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Has anyone tried a stack of mylar, light to medium strength diffuser, black window tint, then a weak diffuser on top? My thinking is that the diffuser before the tint will do the heavy lifting as far as taking care of hot spots. Since the black tint is on top of that first diffuser, we might get away with using just a weak diffuser as the top layer, and preserve the black appearance that the window tint gives us.
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post #367 of 654 Old 04-30-2014, 02:29 AM
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I thought of that, too, but discarded the idea.

 

I have this theory that the light needs to get through the black layer as straight as possible to not loose too much brightness, because of light rays bouncing off in a flat angle need to travel a longer way through the black layer and therefor get absorbed more. This would imho lead to a dimmer picture and a steeper falloff of brightness when going off axis.

 

But I did't test this. Instead of a glossy mylar and a diffuser you could try an already matte metallized film like they used here: http://www.avforums.com/threads/diy-daytime-screen-on-a-budget.1812953/.

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post #368 of 654 Old 05-02-2014, 09:00 AM
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Thanks for the info., cylab.

Have you (or anyone else) tried MACal 9700 Pro in black? The MACtac website describes it as: "Translucent when backlit and opaque when not illuminated."
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post #369 of 654 Old 05-15-2014, 05:40 AM
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Any updates?
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post #370 of 654 Old 05-15-2014, 06:18 AM
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Quote:
Originally Posted by cylab View Post

 

But I did't test this. Instead of a glossy mylar and a diffuser you could try an already matte metallized film like they used here: http://www.avforums.com/threads/diy-daytime-screen-on-a-budget.1812953/.

 

I orded a sample of the Oracle 641-090 (same thing as 631, only more durable) and I was not happy with the results. The first problem I noticed was hot spotting, didn't look very nice at all. Second problem was a great portion of shine / shimmer due to the metall flakes in the film. Third "problem" is that it's not that dark at all.

 

Might work as a simple DIY "daytime screen" if you're not too picky.

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post #371 of 654 Old 05-19-2014, 01:15 AM
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at this moment nothing can compares to screen innovation or yes?
i thinking paint or buy somenthing for the next soccer games whith :


living room
2 side windows 1 in front
Sound bose
walls brown dark
projector benq w1070


what is the best option at the moment after all this test?
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post #372 of 654 Old 05-19-2014, 09:59 AM
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I received an email this weekend from New Design (Rob). He is currently selling a few versions of his black screen (100" in 1.85:1, 120" in 2.40:1 or 2.35:1) for $900 to $1050.

If you are not going DIY, then I would strongly consider one of his (I am deciding this very thing).
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post #373 of 654 Old 05-19-2014, 02:47 PM
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who is rob?
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post #374 of 654 Old 05-19-2014, 05:26 PM
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Rob is New Design--the OP of this thread.
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post #375 of 654 Old 05-20-2014, 10:51 PM
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post #376 of 654 Old 05-20-2014, 10:52 PM
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post #377 of 654 Old 05-21-2014, 02:50 AM
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its possible spray my older 100" pull down screen white matte with this formulas or just works in fixed screen?

thanks guys for the help


Where can i buy that material for 100" ?
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post #378 of 654 Old 05-23-2014, 05:25 PM
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Quote:
Originally Posted by joikd View Post

I received an email this weekend from New Design (Rob). He is currently selling a few versions of his black screen (100" in 1.85:1, 120" in 2.40:1 or 2.35:1) for $900 to $1050.

Guessing he can't get wide enough material to make 16:9 screens then ?
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post #379 of 654 Old 05-23-2014, 07:32 PM
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Guessing he can't get wide enough material to make 16:9 screens then ?

I have just found one of his newly updated Video on his "YouTube" section.

https://www.youtube.com/watch?v=EFfQDp50dhE
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post #380 of 654 Old 05-27-2014, 08:21 AM
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Quote:
Originally Posted by Future Cinema View Post
 

 

I orded a sample of the Oracle 641-090 (same thing as 631, only more durable) and I was not happy with the results. The first problem I noticed was hot spotting, didn't look very nice at all. Second problem was a great portion of shine / shimmer due to the metall flakes in the film. Third "problem" is that it's not that dark at all.

 

Might work as a simple DIY "daytime screen" if you're not too picky.


Hmm. The idea was to use it as a reflective back under a window tint and a weak diffuser like the wall-art. Maybe this setup would counter the problems you found...

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post #381 of 654 Old 05-27-2014, 08:48 AM
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Sorry for not responding recently, but I was quite busy in my dayjob and went on vacation afterwards. I did some more tests with the Rosco diffusers 481 and 482 plus an Oracal 640 as replacement for the Wall Art on top. The results were comparable to Sample P, but require extra adhesive because the Roscos not coming self-adhesive. I wouldn't recommend this, because it's a hassle to work with any kind of adhesive for larger sizes.

 

I also did some tests with the white Oracal 5500 and 5600 and surprisingly the cheaper 5500 was better! Unfortunately I didn't find a self-adhesive non-metallic window tint as a black layer - the metallic ones caused color gradients depending on the viewing angles, so no go :(

 

Another very surprising find was, that with a thicker rear-reflective screen, a diffuse white background performed better than the white retro-reflector, but I don't know what to make out of this...

 

After all I am quite frustrated again (and broke ;)), so I would appreciate some other guys stepping in for a while doing some tests...

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post #382 of 654 Old 05-27-2014, 11:02 AM
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I have some black MACal 9700 Pro on the way. I am hoping that it functions like the demo video on the MacTac website--looks totally black where there is no light hitting it, but very bright at the points where light is hitting it. Best of both worlds? Too good to be true? I will compare it to the black Oralite 5600 that I already have (along with all of the other dark materials I have).

Has anyone tried using a frame with Screen Tight to keep the layers tight without any adhesive? Seems like it should work, especially if the top layer is the tightest layer.
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post #383 of 654 Old 05-27-2014, 04:03 PM
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Quote:
Originally Posted by joikd View Post

I have some black MACal 9700 Pro on the way. I am hoping that it functions like the demo video on the MacTac website--looks totally black where there is no light hitting it, but very bright at the points where light is hitting it.

Hi,
Doesn't it only work as a backlit material? So would require light coming from the rear of the screen?

" MACal 9700pro is a translucent high performance, 5-7 year outdoor film. The face is a matte finished 3-mil cadmium-free vinyl. Available in a wide variety of bright, consistent, uniform translucent colors. The film is coated with a durable permanent acrylic adhesive with excellent wet out characteristics for clarity. An 83# white kraft liner offers stability and layflat. The product has good dimensional stability and is designed for excellent cutting and weedability. Specifically designed for backlit applications "
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post #384 of 654 Old 05-27-2014, 05:35 PM
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Layer 1: reflective layer. Its 48 inches wide so with that being said do u think the lap over seem to make it larger will be noticed after I apply the black layer & the diffuser?
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post #385 of 654 Old 05-28-2014, 01:37 AM
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Originally Posted by stephen77 View Post

Layer 1: reflective layer. Its 48 inches wide so with that being said do u think the lap over seem to make it larger will be noticed after I apply the black layer & the diffuser?

http://www.avsforum.com/t/1485908/diy-black-screen-tests/360#post_24658947

 

Is this a spandex? What are you up to? putting a black spandex steched on top of a silver one? Or will you use a window tint?

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post #386 of 654 Old 05-28-2014, 01:41 AM
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Looks really good. What did you use?

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post #387 of 654 Old 05-28-2014, 11:05 AM
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Yes im going to use light black spandex. Its almost the thickness of pantyhose which should allow the reflective layer to come through & create a black layer. I chose that cause it is really easy to work with & its cheap.
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post #388 of 654 Old 05-28-2014, 11:07 AM
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The reflective layer in the picture is diamond patterned mylar & im going to wrap that in the light black spandex.
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post #389 of 654 Old 05-28-2014, 11:19 AM
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I had a piece of black spandex that I tested over the seem with a diffuser over that & the seem was not visable. Im hoping the diamond pattern in the mylar & the fabric properties in the spandex will help diffuse more light to create better viewing angles. Also if this does work & test have shown it will then there is hope of 120in 16:9 black screen because thats what this will be. The mylar was 34.95 shipped, the spandex 60"×12' was 44.95 shipped & the diffuser im going to use is going to be close to 150$.so around 230$ for materials isnt that bad for this type of screen. I may use the wall art as well for antiglare measures & to brighten the picture.
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post #390 of 654 Old 05-28-2014, 12:33 PM
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stephen77, would you mind posting your sources? I tried a black piece of spandex that the AT guys use with mylar behind it, but it was way too opaque. So, I am highly interested in your spandex!
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