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Recomend some screen material for CineMAX

 
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CasetheCorvetteman




Joined: 09 Nov 2008
Posts: 6319
Location: Australia


PostLink    Posted: Fri Oct 25, 2013 6:15 am    Post subject: Recomend some screen material for CineMAX Reply with quote


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Ive been looking at some screen materials to make a new screen, im getting abit sick of painting the wall and never being able to get it ultra smooth ( im not happy enough with it... )

I saw this here:
http://www.projectorscreens.com.au/evo-ultra4k-screen-vinyl.html

...which looks like it might be a good option, 1.26 gain they say, ultra smooth for sharp focusing they say... Free shipping cause im in Australia, buying from USA could be cheaper to buy material, but the shipping will sure change that in most cases.

It seems as though some of the sharpness I seem to be losing on the Barco could be due to the surface of the wall not being perfectly smooth, so I would like it to be that way.

Here is a very close up shot of the surface:


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Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...

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Spanky Ham




Joined: 22 Mar 2006
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Location: Comedy Central


PostLink    Posted: Fri Oct 25, 2013 1:34 pm    Post subject: Reply with quote

Have you tried sanding your current screen?
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CIR Engineering




Joined: 25 Aug 2008
Posts: 4239
Location: Chicago USA & Berlin Germany

TV/Projector: JVC NX9 + Paladin DCR & Sony G90 : Lumagen Radiance Pro


PostLink    Posted: Fri Oct 25, 2013 4:35 pm    Post subject: Reply with quote

There is no substitute for the Stewart ST130. Expensive, but the best.

It's what I use as do about 70% of all my clients including digital.

craigr

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CasetheCorvetteman




Joined: 09 Nov 2008
Posts: 6319
Location: Australia


PostLink    Posted: Fri Oct 25, 2013 8:17 pm    Post subject: Reply with quote

Do they sell it on a roll for DIY Craig?

Spanky Ham wrote:
Have you tried sanding your current screen?

Yeah mate, cant seem to get it right.

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Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...

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ecrabb
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Joined: 13 Mar 2006
Posts: 15909
Location: Utah

TV/Projector: JVC RS40, Epson 5010


PostLink    Posted: Fri Oct 25, 2013 9:43 pm    Post subject: Re: Recomend some screen material for CineMAX Reply with quote

CasetheCorvetteman wrote:
It seems as though some of the sharpness I seem to be losing on the Barco could be due to the surface of the wall not being perfectly smooth, so I would like it to be that way.

I can't offer any advice on material, but I think you're on the right track, Case... I noticed something similar soon after I switched from the G70 to the JVC. The light specular pebble finish that was fine with the (slightly) softer G70... It really seems to interfere with the definition of really fine detail with the JVC... It isn't that the detail isn't there; I think it's that the "grain" of the screen fights with the fine picture detail.

So, now I'm thinking about a newer screen, and going AT at the same time. Stewart isn't even remotely in the budget, so whatever I do, I'll probably end up with Seymour Screen Excellence Enlightor-4k. Just need to figure out size, how I want to mount it, if I want to change speakers, etc... Always with the decisions.

He has a 1.3-gain solid material for DIY, but I assume it would be cost-prohibitive to ship to Oz.

SC
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Spanky Ham




Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central


PostLink    Posted: Fri Oct 25, 2013 10:04 pm    Post subject: Reply with quote

CasetheCorvetteman wrote:
Do they sell it on a roll for DIY Craig?

Spanky Ham wrote:
Have you tried sanding your current screen?

Yeah mate , cant seem to get it right.
what grit sand paper?
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ecrabb
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Joined: 13 Mar 2006
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PostLink    Posted: Fri Oct 25, 2013 10:19 pm    Post subject: Reply with quote

I can't see how sanding is going to accomplish anything, Spanky... Sanding will take away material and level it, but there's no way in hell you'd ever get a nice, uniform consistent reflection and diffusion.

SC
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AnalogRocks
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PostLink    Posted: Fri Oct 25, 2013 10:20 pm    Post subject: Reply with quote

What if you tried block sanding with a long board then adding another coat of paint?
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ecrabb
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Joined: 13 Mar 2006
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TV/Projector: JVC RS40, Epson 5010


PostLink    Posted: Fri Oct 25, 2013 10:35 pm    Post subject: Reply with quote

AnalogRocks wrote:
What if you tried block sanding with a long board then adding another coat of paint?

Yeah, but then he's right back where he started.

Painting a good screen isn't trivial. You can get paint as flat as a mirror by block-sanding. The car guys do it all the time. The problem is then putting a nice smooth surface back down. Like we just said, the car guys block sand and polish. That won't work for a screen because then you end up with a shiny surface when you need matte - diffusion.

What you need is a very flat, but diffuse surface - something that's extremely difficult. There's a reason good commercial screens are expensive.

SC
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CasetheCorvetteman




Joined: 09 Nov 2008
Posts: 6319
Location: Australia


PostLink    Posted: Sat Oct 26, 2013 2:06 am    Post subject: Reply with quote

ecrabb wrote:
I can't see how sanding is going to accomplish anything, Spanky... Sanding will take away material and level it, but there's no way in hell you'd ever get a nice, uniform consistent reflection and diffusion.

SC

Yep, thats about it, if its shiny it looks horrid, if you sand it more coarse it looks scratched.

I installed a digital at work in a new sports bar project me and a couple other blokes are working on, i have a builder working with me and got him to make the screen from custom board. He did an outstanding job on it, painted with a sponge roller, looks great.

Difference there is its dead flat, mine is plasterboard with timber frame behind it.

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Nashou66




Joined: 12 Jan 2007
Posts: 16171
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PostLink    Posted: Sat Oct 26, 2013 2:15 am    Post subject: Reply with quote

Do you have any good white flat formica like wilson art? Might be a nice inexpensive alternative.

Nashou

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zaphod




Joined: 16 Jun 2006
Posts: 2002
Location: Cloverdale


PostLink    Posted: Sat Oct 26, 2013 2:17 am    Post subject: Reply with quote

ecrabb wrote:
AnalogRocks wrote:
What if you tried block sanding with a long board then adding another coat of paint?

Yeah, but then he's right back where he started.



not really. if you sand after primer, and especially between top coats you get a much smoother result.

there is also the option of spraying on the paint.

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Spanky Ham




Joined: 22 Mar 2006
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PostLink    Posted: Sat Oct 26, 2013 2:51 am    Post subject: Reply with quote

There are ways to sand it without making it glossy. Of course with how cheap spray guns are these days, it would take very little money to spray.

Another alternative is one of the rigid substrates like Gatorboard or Sintra. I sent some samples to mechman and he posted the measurements on them about two or three years ago. I am not sure what the equivalent in Oz is, but these are sign boards.
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CasetheCorvetteman




Joined: 09 Nov 2008
Posts: 6319
Location: Australia


PostLink    Posted: Sat Oct 26, 2013 2:55 am    Post subject: Reply with quote

Ive never heard of those items before.

Nashou66 wrote:
Do you have any good white flat formica like wilson art? Might be a nice inexpensive alternative.

Nashou

Not in that sort of size.

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Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...

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Nashou66




Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY


PostLink    Posted: Sat Oct 26, 2013 3:11 am    Post subject: Reply with quote

What Size case? they make it pretty big.

http://www.cabinetparts.com/p/wilsonart-laminate-sheets-for-countertops-WD3541075X12?gdftrk=gdfV26452_a_7c8_a_7c2091_a_7cWD354_a2s__a2s__a2s__a2s__a2s_107_a2s_5X12&gclid=CPbCms7Ds7oCFYSd4Aod5xQA0A

http://www.amazon.com/Wilsonart-Sheet-Laminate-12-Designer/dp/B003THF1XM

nashou

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CasetheCorvetteman




Joined: 09 Nov 2008
Posts: 6319
Location: Australia


PostLink    Posted: Sat Oct 26, 2013 5:42 am    Post subject: Reply with quote

125" 5:4, i will have a look at that link.
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Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...

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CasetheCorvetteman




Joined: 09 Nov 2008
Posts: 6319
Location: Australia


PostLink    Posted: Sat Oct 26, 2013 5:45 am    Post subject: Reply with quote

Is 5x12 in feet?

Thanks for the links Nash Wink

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CasetheCorvetteman




Joined: 09 Nov 2008
Posts: 6319
Location: Australia


PostLink    Posted: Mon Oct 28, 2013 2:09 am    Post subject: Reply with quote

I might have changed angles on all this, so ill make a new thread... Thanks everyone for your inputs Wink
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Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...

RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 5.1...
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