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Help with a first time projector set-up and screen

post #1 of 31
Thread Starter 
Hello,

I am brand new to the forum and I am looking for some advice on creating a screen for my new projector. From what I have seen, Sintra looks like it might be my best route but here are the details of my build.

1. What I'm looking for: I want as clear of a picture as possible without going broke. The projector will be used as a secondary work PC, a gaming PC, occasional movie night and for sim racing.

2. What I am working with: The room is small at 12.5 x 12.5 with two windows, one on the north side and one on the east side. I have mounted a Ben Q 710 ST to the ceiling at about 8.8ft high and it is throwing an image of about 141 diagonal onto north facing wall and currently has the window right in the middle of the image.

3. The plan: I would like to create either a framed screen or go the Sintra route and hang the screen so that it covers the window. At this point I have blackout curtains on the windows and regular blinds to control most of the light (still working on hanging the blackout curtains but looks like the first set helps a lot)

Lastly I live in Los Angeles so hopefully I can source everything I need close to home.

Thanks for any help!
post #2 of 31
A 5' x 10' sheet of Sintra cut to a 16:9 format is 60" x 107" If you want something big enough to maintain that 141" diagonal image ( 69" x 123" ) you'll have to consider something else like Spandex or BOC material stretched onto a Frame.

How tall is that Window?
post #3 of 31
Thread Starter 
Thanks for the response!

The window is 57 tall from the window sill to top and the width is 58. The window sill is 1.75 thick so I was thinking I could maybe use it to support the bottom of the screen.

I just got off the phone with a local company that has 79x120 sheets in 1/8 inch thickness for $120. Do you guys do some sort of felt for the border and do you paint it or just use as is. Plus, how do you hang Sintra.

I think I can reduce some of the screen size by swinging the mount forward, might actually be better to go smaller since the room is small.

Thanks again for the help.
post #4 of 31
Thread Starter 
So I am hoping to pick up the Sintra tomorrow to go with the 60x107 screen size, do I need them to leave extra material for the border? Plus, looks like the best thing to do is spray this thing so what would I need for that step. I have seen post on Max Mud but not sure if that is what I should go with, any suggestions?

Thanks and happy new year!
post #5 of 31
The Sintra you want is " 6mm " thick. 1/8" would be closer to 3mm, and that type of Sintra is too wobbly.

If you use the thinner type, it has to be "laminated' onto a flat smooth surface. Just like a counter-top...or rather Wall Paper. 3mm us so thin it can easily transfer in "under it's skin" bump or ridge.

Where do you hail from? I might be able to locate a wholesale supplier. But expect the biggest size available to be 120" x 60" x 6mm
post #6 of 31
Thread Starter 
Thank You!

I live in Los Angeles, I spoke to the local Laird Plastics and they quoted me $275 for the 6mm in 79x120 I thought that seemed high, maybe it is because it is an odd size. I would really like to keep the screen build under 300 if possible.

Cheers!
post #7 of 31
Thread Starter 
Thank you Steve.

I have looked at that route before but when I looked at anything but the BOC, things added up really fast. I am open to anything as long as it is fairly easy to set-up. Did you paint the screen?

Forgot to mention, I will be using the screen for some 3d.

Thanks
post #8 of 31
Thread Starter 
Thanks again for the help, I do want to go with the best material possible without going broke so I will call around to see if I can get the sheet of Sintra cheaper. I am supper new to all this so please excuse all the noob questions, what would I need to do to control the gain as suggested and what exactly is the gain? I live next to a Blick art store so I can start collecting material for the coating today. Is it possible to frame the Sintra without needing extra material for the border, just trying to figure out if I can get the 60x107 screen size out of the 5x10 sheet or if I need the sheet to be larger for framing.

This forum is amazing ! Thanks for all the help.
post #9 of 31
Quote:
Originally Posted by odanota View Post

I am supper new to all this so please excuse all the noob questions, what would I need to do to control the gain as suggested and what exactly is the gain? I live next to a Blick art store so I can start collecting material for the coating today. Is it possible to frame the Sintra without needing extra material for the border, just trying to figure out if I can get the 60x107 screen size out of the 5x10 sheet or if I need the sheet to be larger for framing.
This forum is amazing ! Thanks for all the help.


Let's get you some real help.

First off, here's a location that will do you right, price-wise, although they have none of the "Over Sized" inventory:

Sintra / Kometex in "White"
10' x 60" x 6mm @ $118.70
Piedmont Plastics
La Mirada, CA
562.404.4014


Myself, I seldom am able to find the huge sheets that Laird has in stock. But as soon as they open I'll see what i can do to get that price mitigated for you. I have a little bit of clout with those Guys....but so far I haven't seen those size sheets available so there is that to consider.

As for framing in such a manner that you can use the full 60"s...that's pretty easily done using inexpensive White Laminated 1/8" MDF sheeting called "Thrifty White Hardboard" available at Home Depot, or simply using 1" x 6" x 12' Poplar as a Frame with 2" of the wood remaining outside the edges all around.

A few have used a combination of such (Wood & TWH ) and that might be just the ticket for you. In any case, you'll get all the needed help to make it happen....of that you can be certain.

Paint-wise, I would suggest RS-MaxxMudd (est.1.2 gain) Standard or "LL" ( tested @ 1.3+ gain)
post #10 of 31
Thread Starter 
Fantastic, I will start putting my shopping list together now. The standard size sheet looks like it will work fine for me to get the size you suggested at first, I was falling victim to the bigger is better mentality when I first started looking for screens!
post #11 of 31
Quote:
Originally Posted by odanota View Post

Thank You!
I live in Los Angeles, I spoke to the local Laird Plastics and they quoted me $275 for the 6mm in 79x120 I thought that seemed high, maybe it is because it is an odd size. I would really like to keep the screen build under 300 if possible.
Cheers!

See now....it helps to have high friends in low places. (...the Bottoms that is...)

I can arrange for you to get that 80" x 120" x 6mm at Laird for "just" $206.35 + a $10.00 cut charge if you need that.

PM me for details.

Having an extra 2.5" of additional material on all sides can be pretty advantageous, but even with a $70.00 savings, I'd propably go the less expensive route unless I absolutely had to have a bigger Screen surface.
post #12 of 31
Thread Starter 
Amazing! PM sent.
post #13 of 31
Quote:
Originally Posted by MississippiMan View Post

See now....it helps to have high friends in low places. (...the Bottoms that is...)
I can arrange for you to get that 80" x 120" x 6mm at Laird for "just" $206.35 + a $10.00 cut charge if you need that.
PM me for details.

You da man MM!!! smile.gif
post #14 of 31
Thread Starter 
Between the RS-Max Mud and the "LL" would one be better than the other? I am going to try to control the light as much as possible in the room but I will be leaving one window treated in a way that I will be able to use it as a normal window so that will most likely lead to some light to sneak in. By the way, what would the silver fire (think thats the name?) mix be for?

Cheers
post #15 of 31
Quote:
Originally Posted by odanota View Post

Between the RS-Max Mud and the "LL" would one be better than the other? I am going to try to control the light as much as possible in the room but I will be leaving one window treated in a way that I will be able to use it as a normal window so that will most likely lead to some light to sneak in. By the way, what would the silver fire (think thats the name?) mix be for?
Cheers

The "LL" (Low Lumen) variety is the one that is easiest to apply in that it suffers to be rolled on when that is the preferred / only way possible. Uder your circumstances the "LL" has more than adaquate ability to keep up with modest levels of controlled ambient light.

Silver Fire is designed for those whose ambient light resistant requirements exceed what is considered normal and / or appropriate.

It is also a more expensive and complicated mix to assemble, and excepting a few...very few examples, it is and always has been suggested that it be spray applied only.
post #16 of 31
Thread Starter 
Thank You MississippiMan,

Did you get the PM's I sent you? My account is new so just making sure that the messages are getting to you.
post #17 of 31
Yes... but I am currently out in the field gluing up and mirror on to a wall. I will respond a just a little later this afternoon.
post #18 of 31
Thread Starter 
Fantastic, thank you! Just saw a thread about a borderless set up would you suggest that approach for this project?

Cheers!
post #19 of 31
Thread Starter 
OK,

Think I am getting close to creating this thing. I called Laird Plastics and they said they could get me a sheet of off brand Sintra for $199 cut to size. I am aiming for a 60x 107 screen as suggested so if I am going to do an edgeless type screen would I want to cut the sheet at 65x112, leaving 2.5 all around? Still need to figure out framing over the window but it should not be too hard.

Thanks!
post #20 of 31
When you construct your Frame, simply add 2 x 3 struts to each side, just on the outside of where the Window Trim is. That should let the Screen hang flush against it.

For a innovative Hanging system that won't require nailing, use a expandable "Twist to Tighten" Shower / Curtain Rod and attach it to a piece of 3/4" Plywood, that in turn has a French Cleat attached to it. Then all you have to do is set the Rod back inside the Window Frame just far enough that the Screen assembly will lay flush against it when the Screen is hung on the French Cleat system.

If you find the Screen is too heavy, then use a solid Rod on "Cup Ends" with a single Handing Rod Bracket to support the center.
post #21 of 31
Thread Starter 
Thank You! I will try my best to do this correctly... Did the sizing and price seem correct to you? They said they extended a discount to me.

Cheers!
post #22 of 31
Thread Starter 
Last question, should I try to rest the bottom of the screen on the window sill?
post #23 of 31
Quote:
Originally Posted by odanota View Post

Last question, should I try to rest the bottom of the screen on the window sill?

That can make a big difference in the degree / strength of needed "hanging support".

But I'd suggest making the Sill disappear by painting it the same color as the surrounding wall. In "Flat" if that is what sheen the Wall is in.
post #24 of 31
Thread Starter 
Hi MM,

Want to get this correct so the questions keep coming! I am working on drafting the project out on sketchbook should I follow what you did in terms of measurements for the border on this thread http://www.avsforum.com/t/1361269/110-sf-v2-1-3-0-floating-sintra-screen-w-backlighting-videos-too

Also how/what did you use for the felt border? Lastly, just want to confirm the size of the Sintra with you since I am hoping to order tomorrow and certainly do not want to get the wrong thing: Thinking 65x112 for a 60x107 screen with 2.5 for framing (not sure if this is needed for the edgeless look). The screen will have LED lighting so I am not sure if I can rest the screen on the bottom of the window sill after all since it will block the bottom light strip.

Thank You for all your help!
post #25 of 31
I use Black Velvet....never "Felt".
http://www.syfabrics.com/View.aspx/Plush-Triple-Velvet/Black-Plush-Velvet/681/264

The images below:




.................show only about 1.25" of space between the image and the edge of the Sintra. Pretty close to "edgeless" But in fact, you can't have a true "Edgeless" surface and have back lighting coming out from behind, or the edges of the image will look fuzzy.

Having even 1" of Black...or non-projected surface will accent the bright light of the rear lighting. For this thinner Border, it might be best to consider using Electrician's Friction Tape.

But for such an edgeless screen, you absolutely MUST get your adhesion between the Frame and Sintra right.

In the example shown, the Owner wanted some very Wide Trim wrapped in Black Velvet, so actually, the viewable Screen Surface e lost about 5" in width and height.
post #26 of 31
Thread Starter 
Thank You,

So, I will go for the 1" border and use the tape instead of the velvet.

With the new plan in mind, would I only go for a Sintra sheet of 62x109 for the 60x107 screen?
post #27 of 31
Quote:
Originally Posted by odanota View Post

Thank You,
So, I will go for the 1" border and use the tape instead of the velvet.
With the new plan in mind, would I only go for a Sintra sheet of 62x109 for the 60x107 screen?

You still want underneath a 1.5" set back from the edge for the lighting, but yes...you can adjust the surface cut area to allow for the reduced border area if desired.
post #28 of 31
Thread Starter 
MM,

What do you suggest for gluing the Sintra to the frame? Think I am going to go with mounting a few pieces of wood to the wall around the window then adding the French Cleat to the wood and the frame in order to clear the window. Still trying to decide on the best size to go with for the room 122'' diagonal (larger sheet) or 118" diagonal (smaller sheet).

Cheers
post #29 of 31
Quote:
Originally Posted by odanota View Post

MM,
What do you suggest for gluing the Sintra to the frame?

For Sintra to Wood, and considering the relatively small area you have for adhesion, I'd use "Power Grab" (Regular...not Heavy Duty). It's still Water Based. It does have a somewhat short work time, and it's just thick enough that you have to spread out the beads you squirt out.(..they might not flatten out enough with applied pressure otherwise...) But if you can use two Caulk Guns, and two people (of course), and blast through the application / spreading quickly, the positive "Grab" the Power Grab has (...without having to pull it apart like Liquid Nails...) makes it pretty much ideal to use.
Quote:
Think I am going to go with mounting a few pieces of wood to the wall around the window then adding the French Cleat to the wood and the frame in order to clear the window. Still trying to decide on the best size to go with for the room 122'' diagonal (larger sheet) or 118" diagonal (smaller sheet).
Cheers

Personally, that's a no-brainer as far as I'm concerned. If all I was going to lose was 4" diagonal size and save about $100.00 doing so, that 4" would be so gone........
post #30 of 31
Thread Starter 
Thank you MM!

Waiting for all of the parts to come in. Was able to get the Sintra ordered today for $194 cut and delivered for the 60" x 105" sheet for the 118 screen size with 1" border. I am going to start building the frame tonight or tomorrow so if all goes well I should be watching movies within a week!

Any suggestions on placement for the LED light receiver? Obviously, I can's run the power inside the screen like you have suggested on other builds since the window is in the way. I was going to maybe drill a hole in the frame and run the power out of that, just need to figure out how to place the receiver so I can adjust settings if needed (actually not sure if I will need to do this on the box or if I can do it all via the remote).

Cheers
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