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Torus Lite

 
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Spanky Ham




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


PostLink    Posted: Mon Jun 17, 2013 3:18 am    Post subject: Torus Lite Reply with quote


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A guy over on AVS built a rigid Torus Lite. I don't have the heart to tell him it is not a true Torus, but it is a nice looking screen.
http://www.avsforum.com/t/1475920/my-new-torus-screen-with-rs-maxxmudd-ll-paint
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jbmeyer13




Joined: 03 Dec 2010
Posts: 1135



PostLink    Posted: Mon Jun 17, 2013 2:46 pm    Post subject: Reply with quote

Yeah, nice work but it's not a TORUS; just a curved screen. Is it even possible to produce a rigid TORUS screen? I'm sure with enough money it could be done, but I'd imagine that would be beyond amateur DIY'er.
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Projector: Modded 9501LC ULtra- MP VIM, Vold VNB, ETECH LVPS, Silver VIM Cables, HD10F's & a V1 case!
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Spanky Ham




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


PostLink    Posted: Mon Jun 17, 2013 3:28 pm    Post subject: Reply with quote

It is possible. I am not sure how much it would cost. I know that there is a way to curve MDF, but it is beyond the means of DIY. MM, who advised him, says Sintra can be curved, but not into a Torus. I don't know how to describe it, but this guy has one plane curved screen with the corners curved in a second plane.

One thing I would be curious about is focus especially in the transition areas.
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jbmeyer13




Joined: 03 Dec 2010
Posts: 1135



PostLink    Posted: Mon Jun 17, 2013 4:42 pm    Post subject: Reply with quote

Regarding focus, it would probably be ideal to have the HFQ9XX lens for curved screens. That would certainly help a regular horizontal curved screen but having to deal with the second plane is a hole different can of worms. Terry F built TORUS screens for a period of time and he's probably the most knowledgeable individual on this topic.
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Projector: Modded 9501LC ULtra- MP VIM, Vold VNB, ETECH LVPS, Silver VIM Cables, HD10F's & a V1 case!
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Spanky Ham




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


PostLink    Posted: Mon Jun 17, 2013 10:31 pm    Post subject: Reply with quote

Yes, the HFQs would help. The problem is this is not a true Torus. My guess is that he will have a problem about 1/3 in from the edge on each side.
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jbmeyer13




Joined: 03 Dec 2010
Posts: 1135



PostLink    Posted: Wed May 14, 2014 5:20 pm    Post subject: Reply with quote

Spanky Ham wrote:
Yes, the HFQs would help. The problem is this is not a true Torus. My guess is that he will have a problem about 1/3 in from the edge on each side.


Hey Eric,

When you get your stuff together, are you still considering a Torus? I don't have the space in my current theater but if I do in the next house I'd like to try building a 10' wide Torus.

Any idea how exactly MM was bending the Sintra?

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Projector: Modded 9501LC ULtra- MP VIM, Vold VNB, ETECH LVPS, Silver VIM Cables, HD10F's & a V1 case!
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Spanky Ham




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


PostLink    Posted: Thu May 15, 2014 2:44 am    Post subject: Reply with quote

No, I am not. If I was going to hang the pj from the ceiling, then I would attempt it.

I have no idea, but I think he was blowing smoke. I think it is PVC based, so it might be possible to heat it.

I think your best bet is a regular screen material with a vacuum box. Draper has pearlescent, Dalite has a pearlescent and a Silver Lite, and Stewart has a couple of 3D screens along with Ultramatte 2.0.

Your only problem is that your setup with a Torus might surpass your buddy Nashs, so that he might get upset and discouraged and throw in the towel and go digital. Shocked Mr. Green
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