New mix on laminate help? - AVS Forum
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post #1 of 28 Old 03-09-2007, 10:05 AM - Thread Starter
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I'm going to paint my laminate screen ( wilsonart PS07 ) today with the following mix:

1 quart of Behr Matte poly
6 oz. of DECOART Dazzling Metallics - White Pearl
RGBY pigment until a good visual grey is achieved.

Anybody see any problems with this mix?
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post #2 of 28 Old 03-09-2007, 01:02 PM
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No. As a matter of fact, that is very similar to what I have on my screen. I used actual metallic and pearl powders instead of pigments and pearl paint. The most gain I could ever muster before the screen looked too "sparklie/metallic" or hotspotted was 2ish. That is based on my old 1.8 gain measured CGIII screen. Good luck.

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post #3 of 28 Old 03-09-2007, 02:55 PM - Thread Starter
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Well the first dusting coat went on nice. Will continue and hope to have a screen to show by tomorrow.
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post #4 of 28 Old 03-09-2007, 04:09 PM - Thread Starter
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Second coat want on even better. I plan on putting 5-6 dusting coats. I will lightly sand this coat.
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post #5 of 28 Old 03-10-2007, 07:24 AM
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Light dusted coats do not take sanding well until considerable thickness (,,,if it can even be called that....) is built up. You'll remove too much with almost any level of grit you use, waisting that coat.

Achieving a correct ratio of "wetness of paint to Air mixed" is essential when dusting. You want atomized paint that is exceedingly fine-misted, but it must retain it's 'wetness' long enough to hit the surface and adhere without developing undue texture. Such is manifested by the paint particles drying too much before they strike the surface, and forming spheres that do not lie as flat as desired. They build up unevenly, in clusters if you will, and create hills and depressions.

Potential problems/

The mix your using contains a large amount of "pearl to poly". The addition of the RGBY elements will mute some degree of reflection the abundance of Pearl introduces. Will it be the right balance? Perhaps. It does seem like your guessing a bit, but don't stop guessing. Educated and informed guesswork lies behind much of what goes down on here. THEN the testing starts. Your doing what I always do. Try your ideas at "Full Size".

Thats

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post #6 of 28 Old 03-10-2007, 04:38 PM - Thread Starter
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Well the screen is finished and it looks awesome. Pictures will be posted tomorrow. The result is a very dark metallic RGB screen, no yellow pigment was used.
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post #7 of 28 Old 03-11-2007, 06:17 PM
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I understand maybe a "topcoat" (like what is being suggested), but aren't *most* of us/you buying a laminate for a "hang & shoot" solution??? If painting, why not just go on-wall or substrate less expensive?

"I'm a fleabit peanut monkey - all my friends are junkies..."WAR DAMN EAGLE!!!
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post #8 of 28 Old 03-12-2007, 04:13 AM
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asked and answered in another thread where this split off from....

it was there

Jim White
St. Petersburg, FL
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post #9 of 28 Old 03-12-2007, 05:06 AM - Thread Starter
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I was sick yesterday and could not post any pictures. After work I will try and get them up.
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post #10 of 28 Old 03-12-2007, 07:52 AM
 
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Quote:
Originally Posted by rumonkey2 View Post

I understand maybe a "topcoat" (like what is being suggested), but aren't *most* of us/you buying a laminate for a "hang & shoot" solution??? If painting, why not just go on-wall or substrate less expensive?

Yes. But rfisher's looking for a gray with alot of gain, which laminates cannot provide. I asked him why he didn't use a cheaper substrate, as there are many out there. It's because his laminate supplier is only 4 miles away and to acquire something else would be a 20+ mile drive. Made sense to me...

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post #11 of 28 Old 03-12-2007, 07:54 AM
 
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It just occurred to me that I have all kinds of different substrates, suppliers within 10 miles of my house. And yet I drove 38 miles to acquire a sheet of laminate. Now that's funny!

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post #12 of 28 Old 03-12-2007, 08:03 AM - Thread Starter
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I'll take a picture at lunch. I'll turn on all the 6 can lights and let lots of sun light in from the right of the screen.

Now sun light is really a killer to a screen. Because when I view the screen when the sun goes down it looks alot better.
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post #13 of 28 Old 03-12-2007, 09:27 AM - Thread Starter
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FnE04


GRY04


UPW
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post #14 of 28 Old 03-12-2007, 12:50 PM
 
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Looks GREAT!! That's some performance with that amount of light hitting it!

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post #15 of 28 Old 03-12-2007, 12:52 PM - Thread Starter
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Thanks, I though it looked good to. I'll post more pictures when the sun goes down and with all the can lights on. You do see a big difference when no sunlight is present.
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post #16 of 28 Old 03-12-2007, 12:52 PM
 
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rfisher,

Was it dusted enough so as to obscure the laminate? Or is the PS07 having some sort of effect on your screen?

mech
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post #17 of 28 Old 03-12-2007, 01:00 PM
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At 5-6 "Duster Coats", the only effect the PS07 would have would be CR related. rfisher is depending more on the Top Coat to do the "Bright Image" job at hand, and the PS07 to act as a ultra smooth Substrate base that provides CR enhancement without undue attenuation.

Right?

I'm hoping so.

To quote James T. Kirk;
"I'm laughing at the superior intellect"
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post #18 of 28 Old 03-12-2007, 01:12 PM - Thread Starter
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Quote:
Originally Posted by MississippiMan View Post

At 5-6 "Duster Coats", the only effect the PS07 would have would be CR related. rfisher is depending more on the Top Coat to do the "Bright Image" job at hand, and the PS07 to act as a ultra smooth Substrate base that provides CR enhancement without undue attenuation.

Right?

I'm hoping so.

You are absolutely right.
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post #19 of 28 Old 03-12-2007, 01:17 PM - Thread Starter
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Quote:
Originally Posted by mech View Post

rfisher,

Was it dusted enough so as to obscure the laminate? Or is the PS07 having some sort of effect on your screen?

mech

The laminate was completely covered by the paint. I would be surprised if the light from my projector is getting past all those layers.
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post #20 of 28 Old 03-12-2007, 01:49 PM
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rfisher1968 and mm,

ah my fellow avs'ers... ...that would be a completely false assumption.

the light from your projector is definitely getting past those layers...

and the basecoat is definitely playing a roll in the contrast improvement.

i know this because i've done several rear projection screens using 5-6 duster coats a screen mix much more opaque than the one you listed. fact is, i could do 8-10 duster coats and plenty of light is still getting through.
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post #21 of 28 Old 03-13-2007, 04:05 PM - Thread Starter
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Here is some pictures I just took. 7pm EST. Also all my 6 can light are on.



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post #22 of 28 Old 03-14-2007, 10:12 AM - Thread Starter
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If there is any interest I will post some pictures after I calibrate the projector for this screen.
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post #23 of 28 Old 03-14-2007, 09:07 PM
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YES THERE IS INTEREST.. WHERE DO YOU GET THE POWDER? DO YOU HAVE PART NUMBERS ETC? lOOKS VERY VERY GOOD.
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post #24 of 28 Old 03-15-2007, 06:05 AM - Thread Starter
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Quote:
Originally Posted by T_MINTON View Post

YES THERE IS INTEREST.. WHERE DO YOU GET THE POWDER? DO YOU HAVE PART NUMBERS ETC? lOOKS VERY VERY GOOD.

The 6 oz. of DECOART Dazzling Metallics - White Pearl is just craft paint. Here is a link. http://www.decoart.com/cgi-bin/Color...ling_Metallics
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post #25 of 28 Old 03-15-2007, 07:47 AM - Thread Starter
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Quote:
Originally Posted by tiddler View Post

Have you done any comparison between the Folkart Metallic White Pearl and the Decoart White Pearl. I did some crude experiments to determine which has more mica in it and found that the Folkart was loaded with pearl mica flakes while the Decoart mica seemed more silvery looking and was in a lower concentration.

I was primarily looking for a good source for mica flakes and therefore went with the Folkart but I sure would be interested in your assessment of these two craft pearls.

Forgive me if this is a stupid question but, are you spraying your top coats?

I was also wondering what you are using as an RGBY component? Is there any chance I could get you to try the GRaY tinted UPW #1050 in your mix? I would really like to get some feedback from someone with a basis for comparison.

I'm spraying the mix on the laminate. I'm finally good at doing it. As for Folkart vs. Decoart, I liked Decoart because It produced more screen gain when I compared them. As for how much more, I don't remember. But I would be willing to say that either could be used.
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post #26 of 28 Old 03-16-2007, 11:39 AM
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Quote:
Originally Posted by tiddler View Post

I was also wondering what you are using as an RGBY component?

And the answer is...........?

Your screen looks very similar to my screen. Be interesting to really see how much gain you have.

Can you place a piece of UPW painted board against your screen and take a picture off axis? The reason I am asking is because I want to get a feel for viewing cone. IMO, Silver Fire did not fare well off axis because of the sheen. A white screenhad better blacks and whites off axis.I would really like to see how blacks and whites look at off angles on your screen.

Meow.
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post #27 of 28 Old 03-28-2007, 05:32 AM - Thread Starter
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I have spent the last 2 weeks finishing my room. This next weekend I will be building a nice DIY sub woofer. After that I will have time to take measurements of my screen using Spyder Pro and my Spectrocam spectrophotometer. But just eyeballing the screen I would say the gain might be about 1.6.
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post #28 of 28 Old 03-28-2007, 05:42 AM - Thread Starter
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Quote:
Originally Posted by tiddler View Post

Have you done any comparison between the Folkart Metallic White Pearl and the Decoart White Pearl. I did some crude experiments to determine which has more mica in it and found that the Folkart was loaded with pearl mica flakes while the Decoart mica seemed more silvery looking and was in a lower concentration.

I was primarily looking for a good source for mica flakes and therefore went with the Folkart but I sure would be interested in your assessment of these two craft pearls.

Forgive me if this is a stupid question but, are you spraying your top coats?

I was also wondering what you are using as an RGBY component? Is there any chance I could get you to try the GRaY tinted UPW #1050 in your mix? I would really like to get some feedback from someone with a basis for comparison.

I wasn't very scientific with this mix with regards to the pigments I added. I just added RGB pigments until I got the shade of grey I liked. Once I get home I will post the list.
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