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WHOHAA!!!!!!!! Masking rocks! ( now Motorised,well sort of)
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huggy



Joined: 02 Aug 2008
Posts: 698
Location: Melbourne,Australia


PostLink    Posted: Wed Sep 02, 2009 10:28 am    Post subject: WHOHAA!!!!!!!! Masking rocks! ( now Motorised,well sort of) Reply with quote


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Well after 6 months of using aluminium kickboards(that weren't really doing the job) with black velvet for top and bottom masking,I finally decided to build a cable driven manual masking system that will close both top and bottom in the one pull.
So I headed off to the local hardware,got some wire,shackles,aluminium strips and some 40mm pvc piping,or for you yanks 1.57480 inches Mr. Green

Got home,slapped it all together in half a day,and lo and behold the darn thing worked Thumbs Up sure enough ,one pull and both top and bottom go up at the same time.But the real surprise was when I turned the lights off and swithed the pj on..........DAMN!!!!!!!!!!! what a bloody difference,I couldn't believe what I was missing all this time.It's like the image just floats in the air. I'd recommend anyone with substandard masking/reflections to address this asap,the difference is amazing.
Next step is to eliminate all other reflections near the screen,I thought I had a batcave,however a true batcave must be void of most if not all reflections.

Oh and I'll be adding a motor to my masking soon with IR so I never have to get off my fat ass again.

Anyway just had to express my joy Very Happy


Dave


Last edited by huggy on Thu Sep 03, 2009 9:06 am; edited 1 time in total
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greg_mitch



Joined: 03 May 2006
Posts: 5198



PostLink    Posted: Wed Sep 02, 2009 1:00 pm    Post subject: Reply with quote

Prove it!! Wink
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WTS



Joined: 08 Mar 2006
Posts: 1221
Location: Calgary


PostLink    Posted: Wed Sep 02, 2009 1:04 pm    Post subject: Reply with quote

If you have anything but a black ceiling then you'll need to put some black velvet up there. I use about 6' out from the screen, made a big improvement.
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Walter
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AnalogRocks
Moderator


Joined: 08 Mar 2006
Posts: 20961
Location: Toronto, Ontario, Canada

TV/Projector: Sony 1252Q, AMPRO 4000G


PostLink    Posted: Wed Sep 02, 2009 1:25 pm    Post subject: Re: WHOHAA!!!!!!!! Masking rocks! Reply with quote

huggy wrote:
Well after 6 months of using aluminium kickboards(that weren't really doing the job) with black velvet for top and bottom masking,I finally decided to build a cable driven manual masking system that will close both top and bottom in the one pull.
So I headed off to the local hardware,got some wire,shackles,aluminium strips and some 40mm pvc piping,or for you yanks 1.57480 inches Mr. Green

Got home,slapped it all together in half a day,and lo and behold the darn thing worked Thumbs Up sure enough ,one pull and both top and bottom go up at the same time.But the real surprise was when I turned the lights off and swithed the pj on..........DAMN!!!!!!!!!!! what a bloody difference,I couldn't believe what I was missing all this time.It's like the image just floats in the air. I'd recommend anyone with substandard masking/reflections to address this asap,the difference is amazing.
Next step is to eliminate all other reflections near the screen,I thought I had a batcave,however a true batcave must be void of most if not all reflections.

Oh and I'll be adding a motor to my masking soon with IR so I never have to get off my fat ass again.

Anyway just had to express my joy Very Happy


Dave




Very Happy

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kal
Forum Administrator


Joined: 06 Mar 2006
Posts: 12330
Location: Ottawa, Canada

TV/Projector: JVC DLA-RS56


PostLink    Posted: Wed Sep 02, 2009 3:23 pm    Post subject: Reply with quote

WTS wrote:
If you have anything but a black ceiling then you'll need to put some black velvet up there. I use about 6' out from the screen, made a big improvement.

Not just the ceiling but the side walls too and to some point the rest of the room.

Screen masking won't even be noticed if your room is completely flat black with zero reflections since there's nothing to reflect back onto the unused screen surfaces. Of course, very few people have that sort of setup.

Kal

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dropzone7



Joined: 12 Jun 2007
Posts: 1070
Location: Charlotte, NC


PostLink    Posted: Wed Sep 02, 2009 4:17 pm    Post subject: Reply with quote

Pictures please!
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MikeEby



Joined: 24 Jun 2007
Posts: 5135
Location: Osceola, Indiana


PostLink    Posted: Wed Sep 02, 2009 5:20 pm    Post subject: Reply with quote

I agree it makes a huge difference even with the great black levels a CRT has....I just built a very simple masking system...I'll post some pics when I get home....Only problem is some BD's have subtitles in the masking area, same problem CIH guys have...I have overcome this shortcoming by ripping the disk to a file with my HTPC re-encoding the disk with the subtitles over the image. There are not that many disks with this issue but when you run into one, its irritating.


Mike

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PaulB



Joined: 26 Oct 2007
Posts: 359
Location: Bonnie (but rainy) Scotland


PostLink    Posted: Wed Sep 02, 2009 6:49 pm    Post subject: Reply with quote

Pics and more details would be appreciated - great work guys!
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huggy



Joined: 02 Aug 2008
Posts: 698
Location: Melbourne,Australia


PostLink    Posted: Wed Sep 02, 2009 8:42 pm    Post subject: Reply with quote

Pics you say?

Ummm.........ehemmm,did I mention I put this together in a few hours, TBH it was a very preliminary attempt to see if what I ultimately want to achieve will work,but now I know it will Thumbs Up It's not something I would be proud of ATM nor would I post anything like this on AVS but since its experimantal I hope you guy's can overlook the botch job.
I'll take some pics after I get back from work.And will probably start a dedicated thread for DIY motorized IR horizontal masking thread for the really cheap!
Oh and will definately go ahead with eliminating all reflection points as advised.


Dave
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greg_mitch



Joined: 03 May 2006
Posts: 5198



PostLink    Posted: Wed Sep 02, 2009 10:47 pm    Post subject: Reply with quote

now he is starting to back down from his wild claims. Laughing

Wink
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MikeEby



Joined: 24 Jun 2007
Posts: 5135
Location: Osceola, Indiana


PostLink    Posted: Thu Sep 03, 2009 2:57 am    Post subject: Reply with quote

Don't laugh....Here are a few picture of my primitive mask. Cost was about $50, built it just to see if I liked it…Now I can’t watch a scope movie without…The good part is it only takes about 30 seconds to put up or take down…Not as cool as an electric mask but it took longer to take the images and post this information than to build the mask.



The material I used was a cedar lap siding...It's light and fairly cheap and clear of bad knots, about $10 for a 10' long piece, this is what was left over.



This is back side with showing the velvet stapled to back side. The velvet was about $25



Attached to the screen frame with this 1" aluminum angle stock, cut and attached to the velvet wrapped cedar siding. I did counter sink the screws.



Here is the bracket attached to the screen frame...The pin at both ends are just finish nails with an oversized hole to remove and insert at one end. The pin (nail) at the other end is permanently attached… Just slide the mask off the pin at the opposite end then place the pin into the frame other end. The second hole in the bracket wasn't needed because the mask hangs fine with one pin at each end. I store the masks when not in use behind the drapes.


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Last edited by MikeEby on Thu Sep 03, 2009 5:14 am; edited 1 time in total
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Mark_A_W



Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia


PostLink    Posted: Thu Sep 03, 2009 3:33 am    Post subject: Reply with quote

kal wrote:
WTS wrote:
If you have anything but a black ceiling then you'll need to put some black velvet up there. I use about 6' out from the screen, made a big improvement.

Not just the ceiling but the side walls too and to some point the rest of the room.

Screen masking won't even be noticed if your room is completely flat black with zero reflections since there's nothing to reflect back onto the unused screen surfaces. Of course, very few people have that sort of setup.

Kal


Eh?

Kal, are you saying that with a black batcave room, you don't need masks?


That's wrong. Really, really wrong.


CRTs have crappy ANSI contrast. Most of the light spill occurs in the tube/optics.


ALL CRT projectors need full masks.


In fact, I would go so far as to say ALL projection systems need masks.
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huggy



Joined: 02 Aug 2008
Posts: 698
Location: Melbourne,Australia


PostLink    Posted: Thu Sep 03, 2009 7:16 am    Post subject: Reply with quote

Mike
That's exactly how my masking panels were done but with aluminium,did the job but just got so sick of it after a while.




OK here's some pics of FRANKENMASK

Now that I know this works,I'll tear it down and do it properly,so it looks alot neater and not so half assed,but I'm very happy with the results.

OH but the best is yet to come Wink




Dave



IMG_4702.JPG
 Description:
The timber batton behind the aluminium plate it there for stability as the aluminium strip was too wobbly on it's own.
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IMG_4702.JPG



IMG_4702.JPG
 Description:
This is the bottom pipe,as you can see,one cable goes under while the other over,this way one goes up and the other down.I've also used an uluminium plate with two hole drilled to feed the cable,making it easy to adjust as its only held by friction.
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IMG_4702.JPG



IMG_4703.JPG
 Description:
As you can see in this pic,I've just cut a 40mm hole in a corner of some chipboard I had lying around.This allowed me to slot the pvc pipe through,allowing it to move freely.
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IMG_4703.JPG




Last edited by huggy on Thu Sep 03, 2009 9:10 am; edited 1 time in total
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Mark_A_W



Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia


PostLink    Posted: Thu Sep 03, 2009 7:38 am    Post subject: Reply with quote

Hey...that's just like mine!!
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huggy



Joined: 02 Aug 2008
Posts: 698
Location: Melbourne,Australia


PostLink    Posted: Thu Sep 03, 2009 7:45 am    Post subject: Reply with quote

Mark_A_W wrote:
Hey...that's just like mine!!



I bet yours isn't motorized though? Wink


Dave
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Mark_A_W



Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia


PostLink    Posted: Thu Sep 03, 2009 8:18 am    Post subject: Reply with quote

Nup, but unless you got new pics...neither is yours.

I never bothered. Sure I could build it, and control it from my PC, but really, it's not hard to pull a drawstring.


And it's MOTORISED Dave!! We spell proper here mate! Not like them damn yankees!! Wink


Actually, it's a bit different to mine, I don't have a bottom roller.
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huggy



Joined: 02 Aug 2008
Posts: 698
Location: Melbourne,Australia


PostLink    Posted: Thu Sep 03, 2009 8:52 am    Post subject: Reply with quote

Mark_A_W wrote:
Nup, but unless you got new pics...neither is yours.

I never bothered. Sure I could build it, and control it from my PC, but really, it's not hard to pull a drawstring.


And it's MOTORISED Dave!! We spell proper here mate! Not like them damn yankees!! Wink


Actually, it's a bit different to mine, I don't have a bottom roller.


You know,I thought I was spelling it wrong,but when you spend most of your time on these forums,you kinda start spelling like them Very Happy

Update,well I just came back from the wrecking yard and got myself an electric window motor,screwed it to the frame and linked the cable with a screw and WALLAH.......Motorised masking.




Here's the vid.

http://www.youtube.com/watch?v=KbRu2Y_6Z8Q



IMG_4704.JPG
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Here's the Temporary Power Supply 14v
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IMG_4704.JPG



IMG_46991.jpg
 Description:
Here's the motor
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IMG_46991.jpg


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Mark_A_W



Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia


PostLink    Posted: Thu Sep 03, 2009 9:21 am    Post subject: Reply with quote

Are you using limit switches?

Can you stop in between? Not all movies are the same...



And it's very nice, better than mine.



We need a video showing how the window mech works!
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huggy



Joined: 02 Aug 2008
Posts: 698
Location: Melbourne,Australia


PostLink    Posted: Thu Sep 03, 2009 9:27 am    Post subject: Reply with quote

Mark_A_W wrote:
Are you using limit switches?

Can you stop in between? Not all movies are the same...



And it's very nice, better than mine.



We need a video showing how the window mech works!


I'll take a vid now and post.

I can stop anywhere I like afterall I'm just running two cables to the battery to get it to work,what I do need is some advice as just how to hook up a permanent power supply running 14v that I can also access via Ir.


Dave
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huggy



Joined: 02 Aug 2008
Posts: 698
Location: Melbourne,Australia


PostLink    Posted: Thu Sep 03, 2009 10:57 am    Post subject: Reply with quote

Here's a vid of the actual motor in action(its actually on the side of the screen),it's a bit quicker than I'd like but it does the job just fine,but like I said I need to add a power supply with IR,somehow.


http://www.youtube.com/watch?v=aKpK_wRolMY


Dave
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