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Taking it further:
Lets say we're making an electronic Tic-Tac-Toe game. Ideally we want either an X or an O in the same place. To do this we make and X and an O with a separate LED for each one. Since each piece is essentially transparent when off, we can put one behind the other to have a display that can show an X or O in the same space, depending on which LED we light. You can also use the same effect to add more than one color to the same display or animate parts of an image like some animated neon signs.

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23 comments
Oct 22, 2010. 5:05 AMZ0M8I3 says:
I love this instructable! I was inspired to do it myself from the first time I seen it and have made a few small business card sized panels with my friends businesses on them and gave them as gifts. Yesterday I did one a little more elaborate for a good friend of mine and I think it's the best I've done. Normally I wouldn't even bother to put up a post to anything but your inspiration brought out a new skill for me to master and I thank you for that!

Here's a pic of the one I did yesterday. It's roughly 12 inches by 9 inches and took a total of 4 hours to complete. 2 1/2 hours of engraving with my dremel VERY slowly so I wouldn't screw up!

Thank you!
Apr 29, 2012. 12:34 PMVick Jr says:
We used the same method, but with a laser cutter for etching, to make a sign for our organization. Thank you!
Jul 8, 2011. 5:47 AMaessam1 says:
very cool
and i will try to make it
thx man
Oct 7, 2010. 6:46 PM6hobit6 says:
Interesting. I was looking for something like school work.

THANKS
Sep 2, 2010. 1:28 PMCodeKid1001 says:
Maybe you could have 2 leds on wach tic tac toe piece, and then depending on who's turn it is, one of the colors turns on.
Jul 19, 2010. 5:23 AMmiphz says:
i would like to make it someday ... nice
Jun 17, 2010. 12:18 PMjebro391 says:
This is awsome. I was really bored this morning, and I happen to have all the components, and made a little 3-letter "image" and used 3 high-power Blue LED's and it came out AMAZING! This was simple with great results. Thanks for the post! -Joe
Jul 14, 2010. 10:14 AMpiper glass says:
Hi, I've got a project going that has had a number of folks stymied and, after reading about you, I think you might have something useful to add. Here's the deal - I have a steel wall sculpture about 15" diameter, with a multilevel frosted glass insert in the center (pictures attached). It looks fabulous with light behind it but of course this disappears when it's hung on the wall. I want a battery operated system that will give it a little glow - not screaming bright light. Have tried a couple of led fixtures and the one that was bright enough burned through batteries way too fast. Also took a 5mm led and sanded it. Looks pretty good but not enough light. I'm thinking that if I had 3-4 of them in a string around the edge it might work. Can you tell me how to wire it? I know about glass and steel but not about electricity or electronics and you sound like someone who likes to figure things out...Thanks for any tips or advice. Piper
Jul 14, 2010. 2:38 PMjebro391 says:
one simple thing you could do is take one of the lights that worked (the one that burned through batteries too quickly) and solder a wall plug-in transformer to the power terminals so that there's no batteries to run out and this way there will always be a steady level of light. If there is no wall-outlet available, then any other device you use (especially if you string 3 - 4 devices together) will burn through batteries BIG TIME. honestly, the transformer is your best bet the only drawback is you need an outlet nearby, but that's not a huge drawback. Hope this helps. -Joe
Jun 18, 2010. 2:51 PMjebro391 says:
sweet, i didn't even know there was such a contest. I'll add a picture of the simple project. I still need to pick up some of that reflective tape cause I find the electrical tape slightly dampens the LED's brightness -Joe
Jun 20, 2010. 12:37 PMdaemonfist says:
Besides dampening the brightness, I find it loses its "stick" after a while...electrical tape, after all is only meant to be a temporary fix.
Jun 25, 2010. 12:33 PMumair naqash says:
i love it. thanks alote............
Jul 3, 2010. 11:34 AMtjokrist says:
awesome :)
Jun 20, 2010. 12:56 PMdaemonfist says:
I have been a big fan of doing this ever since I originally saw it metku mods  when I first started modding computer cases.

The first three pics are my first attempt...the dragon's fire actually changes from red to orange to yellow...and I also had it hooked up one time to my HDD activity light so he would only breathe fire when the HDD was being accessed.

The next pictures are for my last case-mod...It was a completely custom case, built from scratch from wood, and had a "stealthed" etched front. I did this by tinting the front piece of plexi with car Tint I got from walmart and etching and illuminating a piece of plexi behind it.

This is my favorite case-mod I have done, because I went "whole-hog" and modded everything, including monitros, keyboard, mouse, mouse-pad and speakers.

I use the "router-cone" attachment on my dremel to keep it vertical, and then simply trace my design onto the plastic. This allows me to keep the depth consistent and I find it much easier to control the rotary tool.
Jun 20, 2010. 1:00 PMdaemonfist says:
Oh yeah, BTW, the websites in the watermarks are down at the moment, because I blew the server's HDD and haven't gotten them back up yet.
Jun 18, 2010. 6:01 PMstudystudyforever says:
Thanks a lot
Jun 17, 2010. 2:01 PMPeale says:
Not only am I going to make this, I'm going to use one of these as the sign for our business. I'll definitely post when I finish. One question about the two different colors - is one etching (the X) on one side and the other (the O) on the other side of the glass?
Jun 17, 2010. 7:18 PMIzNoGuD says:
one plastic Layer with the X and one with the circle...
Jun 17, 2010. 7:15 PMGordieGii says:
Two pieces of plastic. One for each shape. One in front of the other. (Looks to me like the red one is in front.)
Jun 17, 2010. 9:14 PMnoyes1920 says:
gagathanks!So funny,i want do it now! draw some different letters!
Jun 17, 2010. 6:22 AMmario59 says:
IDEA: WHAT ABOUT A bench top DIGITAL CLOCK ??? ;-)
Jun 17, 2010. 7:23 PMGordieGii says:
or seven segment display. I wonder how thin the plastic could be and still work...
Jun 17, 2010. 7:16 PMGordieGii says:
Like a solid state nixie tube? Cool idea!
Jun 17, 2010. 6:20 AMmario59 says:
Ciao Grathio!!! Congratulations! You've let me "scavenge" an old idea I've seen in the late '60! Very nice, REALLY!!!! If one has access to a CNC, really fabulous things can be done!!! You let me eager to try something on myself! Again: C O N G R A T U L A T I ON S ! ! ! ! ! Mario
Jun 14, 2010. 8:53 AMEmsaid says:
hey could you post a pic of what it looks like when its not lit up? thanks! cool ible

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Author:Grathio(Grathio Labs)
Creative swashbuckler. Writer for MAKE Magazine, presenter of inventions on TV, radio, magazines and newspapers. Professional problem solver. Annoyingly curious. Hacker of all things from computers ...
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