[Robotgroup] LED art display

[Leslie Filip]

For the record, I am using 1" cast acrylic, back painted, reverse  
engraved, and edge-lit on several of my products, some for around  
five years now. I will gladly show it to anyone who wants to see it.

Mr. Poo-Poo is merely an alter ego for when I have something snotty  
or negative to say, sometimes justified and sometimes not, and you  
should not feel singled out in any way. Mr. Poo-Poo is a non- 
discriminatory asshole. Everyone is fair game. And yes, Mr. Poo-Poo  
often snickers behind his hand like a second grader, so you are right  
on target there : )

Les aka Mr. Poo-Poo


On Jun 27, 2007, at 3:09 PM, Ed Xavier Gonzalez wrote:

> Mr. Poo-Poo, or Mr. P-P (either way, it sounds like a second grader
> snickering behind his hand),
>
> The technology that I've described is and has been available for
> quite some time, in spite of my unintended attempt at concealing the
> project that I was assisting them on.
>
> Edge lighting clear and fluorescent acrylic is something that I've
> worked on for a number of years, including a brief attempt at
> something for the RG this last year.  A few of the members may
> remember me asking questions about using ultra-bright LED's to edge
> light a 1/2" thick slab of plastic with reverse engraved artwork.
>
> The effect is quite stunning, but is limited to the internal optical
> characteristics of the material, specifically related to the index of
> refraction of the core component.
>
> I used to provide some of this stuff to a few folks a number of years
> ago, but had to curtail my offering it because the best material for
> the task was no longer being manufactured.  It seems the company that
> used to cast the acrylic had no idea it worked so well in a edge-lit
> application, and they only found out from me after they stopped
> production.  TOO BAD!  It was great stuff.
>
> There are lots of companies that do edge lighting of acrylic.  They
> just don't do a lot of advertising in Austin.  It's more high-flash
> and meant for a specific audience that doesn't exist in Austin.  I
> guess that 'keeping it weird' doesn't appeal to the folks that make
> these sort of displays.
>
> -----------------------------------------------
>
> At 03:16 AM 6/26/07, you wrote:
>> The following observation is brought to you by Mr. Poo-Poo:
>>
>> Ed, Ed, Ed! Am I detecting a sniff of privileged- or proprietary-
>> type information in there? I thought that was a no-no? Well, OK
>> then.  I'll just get back to work and shut up : )
>>
>> Sincerely,
>> Mr. Poo-Poo
>>
>>
>> On Jun 25, 2007, at 3:06 PM, Ed Xavier Gonzalez wrote:
>>
>>> This looks like the technology that I saw at the display
>>> manufacturing company here in Austin.  I worked with them on an
>>> acrylic display product that was going to be edge-lit, but their
>>> requirements for the final effect in the clear sheet made that
>>> material unsatisfactory.
>>>
>> <snip>
>
> <The right to Free Speech does not diminish the value of remaining  
> silent>
>
> Ed Xavier Gonzalez
> Oak Hill Laser
> ohlaser at swbell.net
> (512) 288-5243
>
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