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Looking for help on screen material err.

post #1 of 26
Thread Starter 
Ok so I've built myself two custom frames this year one is for my flight simulator measuring 120" X 92" on a 55.5" radius giving a 120° fov; the image will be warped and edge blended with two Optoma GT750 short throw projectors. The other is for my theatre room measuring 72" X 48" with a slight custom radius, both frames were hand bent out of 1/2" EMT tubing to have fabric stretched and clamped over top. I will probably just get myself a Benq joybee II projector for the smaller screen as I was rather impressed with my friend's on a plain white wall it can only improve on a real screen.

I have been racking my brain searching online for screen material to use I'm not wanting to go with just blackout cloth but don't want to spend $1000.00 either. I was going to buy b-a deals screen but they don't return my emails and won't buy from not contact sellers. I found Carl's place and there FlexiWhite Projector Screen Material seems to be what I'm looking for however they had a bad review in this forum so again I'm back at square one.

Can some one please help me, thank you for your time.
post #2 of 26
You might consider spandex, especially if you want/need acoustic transparency. It is easy to work with and relatively low cost. If you need gain, though, spandex is probably not for you.
post #3 of 26
If "Acoustic Transparency" is not required, the best possible choice is 6mm Sintra for the smaller surface,

... and a Dual Layered 2-Way Stretch Spandex (White / Gray) for the biggun. http://www.spandexhouse.com/products.php?navId=282&navName=Double%20Face

You could instead use two separate sheets of 4 way Stretch Spandex (Silver & White) from Spandex World, but that is double the cost and work effort.
post #4 of 26
Thread Starter 
Don't need it to be transparent; were can I buy the 6 mm sintra from? I live in Canada, also has any one used the screen innovations black screens?
post #5 of 26
Quote:
Originally Posted by Iceking007 View Post

Don't need it to be transparent; were can I buy the 6 mm sintra from? I live in Canada, also has any one used the screen innovations black screens?

Where in Canada? That would help.

Are you serious about your question about SI BD screens? The cost literally "$Thousands$ in sizes smaller that your thinking of. On this Forum, we don't even discuss Mfg Screens except in the context that our DIY options can achieve the same if not better results.

Besides that, we have DIY solutions, coatings that will go onto almost any non-permeable surface and give you excellent Ambient Light resistance and very precise, dynamic images And they come about for well under $250.00 for almost any size except humongous needs. Even then, then buy-in- cost will amount to no more than a fraction of the cost of any similar Mfg offering...even Mfg Screen Fabric alone.
post #6 of 26
Thread Starter 
Edmonton Alberta; well I was hopping just buy their material off a roll that black screen looks impressive and I haven't seen it before. I suppose I will just stick with white screen.

As per the "manufacturer" some one has to make the product I'm going to buy lol but I read what your typing. I'll buy me those two you recommend and hope they should be good Carl's place got back to me on pricing they've been fast and helpful but I appreciate your inputs; that's what I'm here for.
post #7 of 26
Quote:
Originally Posted by Iceking007 View Post

Edmonton Alberta; well I was hopping just buy their material off a roll that black screen looks impressive and I haven't seen it before. I suppose I will just stick with white screen.
As per the "manufacturer" some one has to make the product I'm going to buy lol but I read what your typing. I'll buy me those two you recommend and hope they should be good Carl's place got back to me on pricing they've been fast and helpful but I appreciate your inputs; that's what I'm here for.

I haven't seen a single positive review of anything form the site you mention, except hardware. But of course I've also had to see lots of posts, so I'll be a tad bit opinionated.

The mantra on DIY Screens is that we suggest and use only materials NOT specifically Designated / Manufactured / Sold as or for use as Screen components (...Screen surface primarily...) To that end the applications we create are all the more special, involve true DIY'ism, and encourage people to save inordinate amounts of cash in the process.

You want "Black Screen performance?



We can help you get it.
post #8 of 26
Thread Starter 
Tough to judge from one picture but again that is why I have come here is that sintra product better than the Spandex why would I use two different products? Where would I get the Sintra from I'd like to order my screen material today so I'm not waiting for it when my projectors arrive thank you.

Also is that picture you posted with the Sintra?
post #9 of 26
Thread Starter 
I must also point out both screens will be used in for all intense purposes room that have been darkened out and no ambient light; I have already purchased and in the mail two Optoma GT750 projectors for my flight simulator and although may on occasion transport my screen and projectors to friends and events which may have varying degrees of darkness; primarily it will be used in ideal conditions. My movie screen will mostly always stay in place and be in ideal dark conditions (yes believe me or not I actually live in the dark literally!) I do not currently have a projector but I am impressed by my friends Benq JoyBee projector and for the money will mostlikely buy one; I do not have a budget for it that's why I'm cheaping out as my free dlp rear projection tv is dying with a cancer movies are becoming unbearable. I am just for sh*ts n giggles looking at other entry level projectors but I literally will have <$700 all in for my third missing projector so please spare the (if you only spend this you could get this) as this is where my priorities lie and they are set in stone.

Thank you so much for your help time and opinions.
post #10 of 26
Thread Starter 
Ok so I just found out that Sintra is a solid board of some type; not what I'm looking for I'm looking for a cloth material that I can stretch and clamp on to my frame and roll up if I transport.

I've heard some people use the Rose Brand Tendo; (hope that is not a manufactures 'brand') how would that compare to the two ply Spandex I would get white ofcourse or black; can you just project onto a black image?

Haven't heard any responses lately hope some one can still help me, thank you for your time and opinions.
post #11 of 26
Thread Starter 
I went to the fabric store today but they didn't have any spandex material over 150cm wide. They did however have blackout cloth and Black velveteen. Still wondering if I can buy black screen material and use a projector on that or if I have to get white.
post #12 of 26
The 150 cm width might just work. I am confused; your screen measurements are in inches but the fabric is metric? Just giving you a hard time, I appreciate the English unit conversions above. I purchased two yards (72") of moleskin matte silver that was only 13% spandex and I was able to stretch it over a 110" wide frame, but it was pretty tight. If you buy spandex with a 20% spandex content you should be able to stretch the 150 cm wide material to the 234 cm that you need for your gaming screens fairly easily. You will need two layers, though, because a single layer will be too transparent. With the GT 750 projectors you could probably use a layer of black over white or silver (gray) over white.
post #13 of 26
Thread Starter 
Awesome what would I look for in material they had this athletic micro fiber material it had tiny perforations in it just seemed like a screen to me for some reason or another the rest of their spandex blends were about the same to me. They didn't have any grey or silver or any reflective materials. I could try a thin black over a pure white and perhaps with the perforations I will get good light bouncing back off the white and good blacks from the black?

Does this make sense?

The micro fiber was 16/m and the two white spandex's were 19&20/m.

Then maybe I can get the seems hemmed and two pieces sewn together.
post #14 of 26
Quote:
Originally Posted by Iceking007 View Post


Then maybe I can get the seems hemmed and two pieces sewn together.

Don't even try.

Just order the needed Spandex from the links that have been so readily provided. You making it more difficult than it even remotely needs to be. Get the right stuff and get'ter dun!
post #15 of 26
I would suggest that you read this thread. It has lots of pictures of the various spandex combinations.
http://www.avsforum.com/t/1398127/upgraded-pj-change-from-silver-to-at-spandex
post #16 of 26
Thread Starter 
Yes MississippiMan I often do that, I apologize two questions then as I'm looking at your resource should I get a black screen of some type won't that give me a better image and second if I get a black screen for movies (small one) should I rear use rear projection?

I will be buying a Benq W710ST but for my FS I can only use front projection due to space.

Thank you.
post #17 of 26
Thread Starter 
Will I be able to cut this material and will it tear or separate?

Also I just noticed it is only 60" wide will it stretch to 98"?
post #18 of 26
Thread Starter 
Ok so spandex house said the 60" will only stretch to about 72" and they can get 120" wide but only in white. Is nothing easy?
post #19 of 26
Thread Starter 
I'm just going to order this material and have it sewn together; will update once I have things up and running... Not that my opinion matters or means anything.
post #20 of 26
Quote:
Originally Posted by Iceking007 View Post

I'm just going to order this material and have it sewn together; will update once I have things up and running... Not that my opinion matters or means anything.

Sewn together?
post #21 of 26
Thread Starter 
Yes it's only 60" wide and they say it will stretch to 72". I need 92" wide at least plus stretch so I have ordered twice the length I require.
post #22 of 26
This will not turn out well. frown.gif

Your Sewn Seam will be a quite visible line going across the width of the Screen.

The Folks you spoke to are being quite conservative as far as stretch-ability. All you need to do is to limit your selection to Spandex that has at least 20% content and it will go across your desired frame.

You would be well advised to cancel that order...else your about to waste your money, be really PO'd, and risk getting discouraged about DIY altogether. I've seen it happen before, and it's not a pretty thing to see happen.

Then again, some people simply must learn these things themselves. I hope your spared that...i really do.
post #23 of 26
Thread Starter 
I ordered that double face white/gray like you suggested I hope they haven't cut it yet; your sure it will stretch?
post #24 of 26
Quote:
Originally Posted by Iceking007 View Post

I ordered that double face white/gray like you suggested I hope they haven't cut it yet; your sure it will stretch?

I think that particular stuff is just two-way stretch...which would explain the lower percentage of stretch they told you.

Let me do some checking myself. Yep...2-way stretch. They are correct....it won't go over a 90"+ Tall Fame.

PS,
.....at worst, I'm sure we can find a needy DIY'er to take some off your hands, so at worst you'll be left holding the initial Freight charge.

Here is 120" wide in White.
http://spandexworld.com/c3/catalog/product/10869

If you at all concerned about the ability of the 80-20 Spandex to go the required distance, the 120" wide stuff is of course a safe bet.

You can use a normal 60" wide 4-way Stretch Gray stretched out to it's maximum for the Backing.
post #25 of 26
Thread Starter 
Ok... Well it's on order anyways so I will see what I get when it arrives, it's for my gaming screen anyways so I won't be using 100% of the screen a local seemstress said she can sew it so it won't tear and she will do two seems top and bottom for $50.

I'll keep you updated.
post #26 of 26
Thread Starter 
Ok so here is an update; I've got my movie screen all set up and the projector working, I've been using it for about two weeks now just playing with options and testing some things. I ordered o variety of fablic from spandex house to test as I was hoping to get a black screen working for a better image the results are as fallows:

I opened up my shipment and quickly was able to discover what I had hopes of promising results and what I didn't think would prove fruitful; innitially as Mississippi Man suggested I put up the Gunmetal Gray/.White two face matterial with the white facing the audience, I used that for a day or two then I had ordered this very fine material which is almost like a netting or nylons that woman would wear it's black so I figured most light would pass through this and hit the white screen and reflect back to the eye rather than get absorbed by the black matterial but there should be enough black that it will create a truer black.

I used that on the screen for about a week or so and then decided to take it off and wash my screen matterial as there were some odd reflective sparkles here and there and some other artifacts. I fallowed the spandex house's directions for washing and then hung the matterial to dry. After that process I decided to remount the two face with Gunmetal Gray faciing the audience; I have put up a backer behind the screen as even with two matterial layers the screen is still transparent and in some areas I can see the supports at the back during dark scenes. Also in my order I found some stretchable sport matterial I also ordered in black; this is like a hockey jersey matterial but not the close knit type it has larger holes for breathing; I used this first on the frame to back it and stop the light then I stretched the two face. I found that the very fine/lightweight mesh matterial was a huge complication to stretch over the screen, you must get it 100% tentioned evenly or it will form patterns and swirls over your image which are very noticeable.

The light mesh will also not sit flat on the two face so if you don't tention it properly you will get ghosting in your image. I have been watching on just the gray side the last week and I'm still not satisfied; the gray doesn't see to bad; Black IS NOT Black... but asside from that the worst part about it is this matterial it's self is not perfect; it has HOT spots on the matterial and weird patterns almost like certain areas are wet and yet they are not; I'm planning on washing it again but don't image it will improve anything I think it's just cheap matterial it really takes the viewer out of the film as you get distracted from the scene with these glaring areas.

As for adding layers to screen and using black matterial I have found that you can project an image onto a black surface; however it's not the surface that is the problem it's the projector. Allow me to explain as I am typing this posting I'm viewing my window projected onto the gray screen; the image is corrected with my warping software and color corrected with data color (adjusting lumens, reading ambient light, color correction along with Black and White settings) all are within range. Since my projector (Benq W710ST - Short Throw - ) is mounted on the cieling pointed down close to the screen (all close to spec) and keystone corrected manually there is a bow in the projected image especially since my screen is curved but not calculated precicely like a cinema screen.
You can image this bow to create a 'smiling mouth' like shape under my "Windows window" of which is projected image but not used just.... well 'black'; however below that is still a few inches of unprojected screen matterial (Gray) however when looking at the screen I see a mostly white window (the forum) then my task bar then the washed out black/ gray looking 'smiling mouth' and then the screen which looks black. Above my screen is a similar picture there is over projected area which is unused and then some dark unprojected screen area and then black velvet I attached to the cieling; the black unprojected screen almost matches the black velvet but the washed out projected area is not even close.

This tells me that in order to get an actually black image you'd have to have a projector that didn't project any area that was black as it is the light that ruins this image.

I have also abandoned multi layers for screen matterial since my screen "floats" in the air with guy wires 5 feet off the ground it is far too challenging and tedius to attached multiple layers of screen matterial just to try out to see what is the best to use.

Needless to say I am very dissapointed with my purchase and will be looking for new screen matterial; R&R is expensive teedius work, I've just wasted $250 (+ S&H to Canada) on screen matterial which is of no use; if any one has any better matterial please let me know; thank you.
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