Back projection 56 inch multitouch television.

Step 5 Fixing other layers

Your acrylic is now ready to be covered with other layers. Before you stretch the Rosco on the acrylic you have to put a 1mm spacer on edges of the screen to avoid the Rosco being directly on the silicone rubber. I personally use arborite which is 1/32 inch thick. This small air gap helps to avoid the Rosco from sticking to the acrylic.

The easiest solution I find out to this problem its tape, I used the best tape I found. For the simplest result you start by stretching the center in both directions horizontally and vertically and then you process to the outside in rotation. Go by small steps to avoid wave in foil. First you have to stretch the Rosco than your protective foil. I use to cut both exactly the same dimensions of my screen so it simple to tape it on edges and at the backside.

As protective foil I personally use Insulating film which are really thin and retract when you blow warm air onto it. I took the thicker of the 3 size. You have to stretch it using the same method as the Rosco and then you blow warm air from an air dryer to eliminate waves. My results with this product were awesome compare to those obtain with my previous vinyl which was too thick and hard to hold with tape. I suggest you to put some layers of tape around the edges of the acrylic to help other tape to hold.

NEVER STICK TAPE DIRECTLY ONTO THE ACRYLIC OR COVER IT WITH BLACK PAINT!

Comments

[m.kitchen]

Is it possible to put the projection screen on the bottom layer? This way you're touching the acrylic and not the rosco.

[09wklaehn]

Christopher, I am at teh point of adding the screen in, thanks to your great plans I have been able to build eveerything else, but I am a bit confused on the placement of the rosco aabove the screen. Should I put the spacer along the 1/2 inch edge without silicon? and tehn put tapw o the sides and stretch the rosco? Thanks for any help, William!

[09wklaehn]

So I have the LEDs in, and everything else, but you said in your post to never tape directly onto the Acrylic. I don't see how you can't? how did you attach and stretch the rescue without taping on the back of the acrylic. Sorry to bother you again, but thanks for all your help. Have a merry Christmas!!

[Christopher Jette]

Yeah that's exactly it! after you tape your protective foil over this! Chris

[junior2387]

what is the silicon rubber for, and what do i use for protective foil and where do i find it? and i run electric tape on top of the black paint all along the edges? is to reinforce ir leaking in?

[09wklaehn]

silicon rubber allows your finger press to slightly indent the Ir layer, which then cuts intothe ir path, producing the blob. The protective foie is just there to protect the projectr screen, you can find it from his link, or just buy window wrap from any hardware store. Te black electric tape, and black paint is indeed used to help ftop IR leakage.

[junior2387]

ok i understand that, but one thing iam still a little bit iffy on is, when i put the paint on... do i also paint the edge of the class where the LEDs are on.. where i drilled and inserted the LEDs.. does that edge get paint also...

[brute4x4]

ok im quite confused on what this Rosco stuff is lol could you post a link on what it is or where to get it?

[Christopher Jette]

The rosco is a back projection screen. I have already put the link to rosco website from wich you will be able to find a dealer near you! Hope it helps you! Chris