Step 4: The Feature

This is certainly the tricky and tedious part.

The holes on the plexi have to be squared off to accomodate the heads of the carriage bolts. The best way I found to do this was to use the Dremel tool with the 'multi-purpose' routing bit. Work a bit at each corner of each hole, and you should end up with an adequate square hole shortly. Test fit the bolt often, as it's always easier to take a bit more off than to put any back on.

Once the plexi is drilled and routed, spray both sides with the frosted spray paint. Use several coats, as the more frosted it is, the better it will diffuse the light.

On to the tedious... Print out a mirror image of whatever logo you want on the glass. Then, trace it onto your contact paper and cut it out with your exacto knife. Depending on how intricate a logo you choose, this could take a while...

Once the logo is cut out, stick it on the side of the plexi you want facing towards the back of the frame. This should look like a backwards picture of your logo. Proceed to put down several light coats of silver (or any reflective-colored) spray paint. I stress light coats here, because I ran into trouble with paint building up and running underneath my stencil. I then had to go and scrape out certain parts of the logo. This gave it a rough look which I kind of like, but could make a clean project real dirty, real quick. Another good idea (in hindsight) would be to mask off the front of the plexi, so it doesn't get any of the silver paint on it (which mine did). Let the paint dry thoroughly, and then remove the stencil. If all went well, you should have a nice logo on the backside of your plexi.
what kind of lightbulbs in terms of mcd/brightness did u guys use?
hey finally got around to making my sign. i used&nbsp; a vinyl cutout of a design that i made in photoshop and ran it through ac power seeing as how it will be on about 16 hours a day 7 days a week.&nbsp; here is some pics and a pretty crappy vid (taken from my phone). all in all i must say a pretty easy <object height="480" width="640"> <param name="movie" value="http://www.megavideo.com/v/X0YQTW9Rc5ec206f1e0ec5b557246810ebf9947c" /> <param name="allowFullScreen" value="true" /><embed allowfullscreen="true" height="480" src="http://www.megavideo.com/v/X0YQTW9Rc5ec206f1e0ec5b557246810ebf9947c" type="application/x-shockwave-flash" width="640" /></object><br />
Looks great!&nbsp; Of course, I love all things bowling too!&nbsp; :D
This is awesome, in a band myself and was looking for something &quot;different&quot; from the standard logo and name on a sheet hanging somewhere near stage.&nbsp; Think I'll upstage it to a 3x2 foot frame though!<br />
So I bought the color changing LEDs that Radio Shack have in stock and they have 4 wires sticking out the bottom instead of only 2. Can I use these? Do I only need to use 2 of the 4 or do I need to wire these differently (or get different LEDs) to get this to work?
Yeah, those are the wrong kind I'm afraid.&nbsp; They're RGB LEDs, but the color levels are controlled separately.&nbsp; The four wires sticking out of the bottom are for the Red, Green, and Blue positive leads, and then one common negative lead.&nbsp; The LEDs I used have a built in chip that causes them to automatically cycle through the different color patterns, so all I&nbsp;had to do was wire the two leads up to + and -.&nbsp; I found a large pack of them on Ebay for relatively cheap.&nbsp; You'll want to look for 'slow flash color change rgb LEDs' or something along those lines.&nbsp; Something like <a href="http://cgi.ebay.com/50-Pcs-3mm-Red-Green-blue-RGB-LED-Light-Rainbow-free-R_W0QQitemZ110432018055QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item19b642de87" rel="nofollow">this</a> will work...
&nbsp;Thanks for the link! Just got a pack off eBay! Last question... where does the resister go? From the instructions, it sounds like between the batteries and the switch... So the positive lead goes from batteries, to resister, to switch, to each LED, one after another. Right? And the negative lead just goes from the battery holders to each negative on the LED, one after another
What would be even cooler, would be to hook it up to an arduino interface, and program the changing of the colors(ruquires special LED's) and maybe sync it with a song and play the song and the lights at the same time....that of course, would be very difficult, yet totally awesome..!!!!
That isn't really that hard to do... What you are talking about is a light organ... That uses 3 SCRs, and a power source... plus a audio input.. a small mic. or a straight input jack... RCA, or a pair of screw terminals. A little bit of soldering is required... I did it a long time ago... I did it for under $10.00 and I made 2 with Christmas Tree lights too... That uses the same concept, just with ac, and a small transformer.
ha...easy for you to say...to me that sounded like military jargon...however, i trust that you know what your talking about...
You can find a lot of the parts online, SCR... Silicone Controlled Rectifier... Although if you use LEDs then you will need some resistors and a bridge rectifier. That changes it from AC to DC, and the transformer steps it down from 110- X Volts.. X represents the voltage in a/c, and the rectifier which is just 4 diodes together to change the ac to dc. It sounds hard, but it is easy as baking a apple pie... Yes I can bake too.. lol...
yumm pie...can you make cake (that rhymed) lol
It is all basic electronics... A standard led is 1.2 v DC. vs a Christmas tree bulb is 110 v AC. Although with a transformer you can step the voltage down to 12 volts AC and a few pots to tune for the intensity of the light and the sensitivity of the colors.. 1 for each color on that string. So if you want 4 colors, then you need 4 pots. If you use LEDs then you have to get into a bridge rectifier, and then resistors... since you are pushing 12 VDC into a series of lights that only use 1.2v dc. So unless you are going to use a lot of them in a certain space say like 12, then you wont need to invoke ohms law into the situation. That is 12 for each color that you are doing... and the pattern that you want to do it with also... Simple as Pi... 3.1425
Yes, the possibilities are wide open! I just used the flashing kind with built-in chips, but the four-pronged variety could definitely be used. You could use a chip to emulate patterns or even create a color fade effect! Great comment and ideas!
Where do you get the colour changing LED, Im in Milwaukee, Wi and cant find them anywhere. I end up taking apart x-mas coulour changing ornaments...by the way the wife was not happy about that.....don't do what i did.
You're most certainly a braver man than I... :D I found the LEDs on Ebay. If you search for 'rgb leds slow change', you should find plenty of sellers. I bought 50 for $10 + shipping. They also sell fast color-changing ones as well.
Band sounds good.
Hey thanks! I'm glad you enjoy it!
Very nice!
Awesome! Your photos are great too, nice job!
Thanks very much! Glad you enjoyed it!

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