Making A DIY Anamorphic Lens - Page 10 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #91 of 170 Old 03-15-11, 01:03 AM
Mark Techer
 
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Re: Making A DIY Anamorphic Lens

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Prof. wrote: View Post
So each case is machined individually!?..That would be expensive..
Obviously, Injection Moulding would be a lot cheaper, but off course that's only practical with a large quantity of units..I see your dilemma..
The joys of machining. For this case, the most economic way to do the case is to laser cut the plastic parts. That way, the case should be less than $100 each.

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grinthock wrote: View Post
Others here may (like myself) have access to equipment to cut and machine a case as well.. So I am listening for sure.
Given the price of the glass, is the little extra for a tested design really too much?
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post #92 of 170 Old 03-15-11, 07:20 AM
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Re: Making A DIY Anamorphic Lens

Mark;

Well that being said nobody has discussed $$ yet... So if i'm saving $50 then it's obviously not worth it.
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post #93 of 170 Old 03-15-11, 05:19 PM Thread Starter
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Re: Making A DIY Anamorphic Lens

Pricing can't be discussed here..PM Mark for details..

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post #94 of 170 Old 03-17-11, 07:36 AM
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Re: Making A DIY Anamorphic Lens

Hey guys,

Sorry I have been out of touch since my post....We are making a lot of changes at work that had me working all last weekend and very long days this week. Once the dust settles around these servers I will start posting my progress.

I have a few ideas about my case but before I start actually putting anything together I thought I would set them up in front of my PJ to get a feel for where they should sit. I see what Mark is talking about on being VERY precise. This case will have to be very carefully crafted (laser cut plastic might be ideal) or designed or at minimum it will need to have a least 3 fine tuning adjustments to get the lens setup correctly.

This weekend is set to be gorgeous (weather wise) and I hope to get out in the garage open the door and see what I can come up with.
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post #95 of 170 Old 03-17-11, 05:54 PM
Mark Techer
 
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Re: Making A DIY Anamorphic Lens

Laser cut plastic is probably the most affordable and accurate method to make the lens holders.

Given the rear lens is some 19mm think, my new DIY case will be made from 2 layers of 10mm (bonded) with a cutout of 80mm in each, and have a 2mm plates front and black (back plate will be bonded, front plate will be screwed down) with a cutout of 76mm. I'll also use the same 76/2mm O Rings that I use in the MK4. This way the lens can't move and is sealed once installed and aligned.

I've been working on this new case for 4 days now and I am still finding things I need to change. Lucky I find it fun to do this stuff.
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post #96 of 170 Old 03-30-11, 06:04 PM
Mark Techer
 
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Re: Making A DIY Anamorphic Lens

Ok after about 2 weeks of painstakingly drawing and redrawing this new "DIY lens" case, I finally am ready to take the design to a fabricator to make the prototype. This will probably take another 10~14 days. The reason for this post is simply to let you guys know I am all over this.
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post #97 of 170 Old 03-30-11, 06:12 PM Thread Starter
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Re: Making A DIY Anamorphic Lens

That's good to hear Mark..Very interested to see how it turns out..

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post #98 of 170 Old 03-31-11, 12:14 AM
Mark Techer
 
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Re: Making A DIY Anamorphic Lens

Yeah me too. Design is now at the laser cutters.
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post #99 of 170 Old 03-31-11, 07:25 AM
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Re: Making A DIY Anamorphic Lens

Sweet Mark!! Keep me posted......I have been swamped at work...the new building is nearing completion so all of the projects I have been working on are about to be installed...((Video Wall (Qty12 55" screens) access control, distributed audio, audio for Basketball court, gym,fitness room.....)) As fun as it sounds to be able to spend money that is not yours to get some really nice equipment....It can still be stressful!

Let me know when you get that case back from the cutting shop.
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post #100 of 170 Old 03-31-11, 09:33 PM
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Re: Making A DIY Anamorphic Lens

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tgregory73 wrote: View Post

Let me know when you get that case back from the cutting shop.
Will do
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