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Re: Ball Dreams
Author:
Marz Kelly
Date: 05-22-02 19:37
Problems inherent in placing a transmissive UV light in an acrylic.
1: Charging it
2: Making it look good
3: Hiding the charging apparatus/wires
4: Making it bright (As clear acrylic acts somewhat like fiber optic cable and does not lend itself well to brightness.
Solution.
1: Cast two 1" thick acrylic hemispheres that are integrally threaded so that thay may be attached to each other with a half twist, forming a 3" shell with a 1" hollow center.
2: Form 6 black light LED's into a spherical array 1" across with a watch battery and a switch inside and cover with a plastic sleeve.
3: Acid etch the outside of the hemispheres with a 3% aqueous solution of hydrocloric acid to make them matte finished.
4: Place the LED array inside, turn it on, and twist the halves together; this will give you a very bright transmissive (No external black light necessary) UV ball that is uniformally illuminated from within.
I can build you one if you want, talk to me in a month and a half when I have moved.
Marz Kelly (Tare@boxfrog.com)
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