3 Simple Ways to
Share What You Make

With Instructables you can share what you make with the world — and tap into an ever-growing community of creative experts.

PhotosPhotos

Share one or more photos of a project, recipe, or whatever you've made, quickly and easily.

Step by StepStep-By-Step

Share your step-by-step photos with text instructions of what you made so others can do it too!

VideoVideo

Share your how-to video. You'll need your embed code from a video site such as YouTube.

The USB Ultraviolet Light.

The USB Ultraviolet Light.
«
  • HPIM1157.JPG
  • HPIM1158.JPG
  • HPIM1159.JPG
  • HPIM1160.JPG
  • HPIM1161.JPG
Hello instructable enthusiasts, I made this for a friend and was so pleased with the result I had to make one for myself and I figured I would share it with all of you.

I was playing around with my new drill press while brainstorming types of desk top lights, this is what was born from those sessions.

Before you jump into this project make sure you have the experience needed to complete this project. This light requires little knowledge or skill, but patience and diligence are always a must. In order to complete this project a little knowledge is needed in routing, drilling, soldering and a little common sense never hurt anyone.

Always wear eye protection and rolled-up sleeves when working with high RPM tools.
--------WARNING: prolonged exposure to ultraviolet light can cause serious eye problems, never look directly into an ultraviolet LED------

For this project you will need:

  • A hole saw larger than 1 1/4"
  • A 1" speed bore bit
  • A router and cutting bit
  • A pipe cutter or hack saw
  • Some scrap wood with a depth of 3/4" or greater
  • A light bulb
  • A hot glue gun with glue
  • Some craft foam to cover the base
  • An Ultraviolet LED
  • One 100 OHM resistor
  • A USB cord
  • Something UV reactive
 
Remove these adsRemove these ads by Signing Up
 

Step 1In The Shop

In The Shop
«
  • HPIM1164.JPG
  • HPIM1167.JPG
  • HPIM1168.JPG
  • HPIM1169.JPG
  • HPIM1170.JPG
  • HPIM1171.JPG
  • HPIM1173.JPG
  • HPIM1174.JPG
  • HPIM1175.JPG
  • HPIM1176.JPG
  • HPIM1177.JPG
  • HPIM1178.JPG
  • HPIM1182.JPG
  • last photo ←
»
First off you are going to need to disassemble your light bulb. I learned how to at http://www.instructables.com/id/Concrete-Lightbulb-Wall-Hook/. To start off take your pipe cutters and match up the cutting wheel in between the first and second threads at the end of the bulb. While twisting the pipe cutters slowly increase the pressure of the cutting wheel, and don't worry about any glass breaking the space between the first and second bottom thread is void of any glass. Once you have taken off and discarded the bottom cap of the bulb you may begin breaking off the inner workings of the light bulb. Do this by snapping the glass rod which sticks out from the bottom, applying leverage with a drill bit or something similar around the inside lip of the end of the bulb and folding inward the remaining lip of metal. Now you are ready for some wood-working.

Take your 3/4" or deeper piece of wood and drill out a hole with the hole saw, having a bit in the hole saw is completely fine because it gives you the center and a space for your LED. Sometimes getting the cylinder of wood out of the hole saw is difficult, especially if you do not want to damage the wood, I used a screw driver and just knocked the wood out, but if you do damage the wood like I did just make that side the bottom of your light.

Now that you have your circular piece of wood cut its time to vice it and use a speed bore bit on it. Make sure to mark the depth on your bit or drill press so you do not drill the whole way through the cylinder. Just mark how deep the metal threads on the bulb go and begin drilling out the center.Once you have drilled out a slot for your bulb check to make sure it fits properly and adjust accordingly.

Now that you have your slot drilled and matched its time to begin routing. Securely clamp your cylinder in a clamp and adjust the depth of your cutting bit to the same depth of your USB cord, at the same time making sure that the bit is not too deep as it might cut through into your bulb slot. When you begin routing start off with a straight line radiating from the center of the bottom of your cylinder to it's side. Give enough room for the width of your cord and your electrical components by making a bubble shaped route in the wood. Once you have routed out enough space its time to install the electricity.


« Previous StepDownload PDFView All StepsNext Step »
17 comments
Nov 23, 2011. 8:51 PMmrA4Awesome says:
Hopefully this is not a silly question but how did you get the material to stay against the bulb inside? I dont wana use glue cause of the mess it leaves after drying.. cheers - or is a wire type material that has sorta sprung out and is able to hold its own? :S
Nov 28, 2011. 7:15 PMNo0neLeftBehind says:
the wire just expands and holds itself inside
Nov 28, 2011. 11:40 PMmrA4Awesome says:
Is it a type of fishing line reel or something?
Nov 29, 2011. 12:18 PMNo0neLeftBehind says:
its about 50 year old archery string ... at least mine is and so is the one in the instructable i think fishing line might work if it expands enough
Sep 19, 2011. 11:11 PMteran_93 says:
nice to the night =)
Sep 11, 2011. 1:52 PMScrewerman says:
is more simple that it looks
is a very good idea =)
Sep 10, 2011. 8:07 PMNo0neLeftBehind says:
seriously eric it is awesome that this got featured ... and i cant believe that i have this exact same usb light plugged into my wall and used as a light for my keyboard ... this is awesome ... just saying
Sep 10, 2011. 6:51 AMElectorials says:
That's just awesome!
I really like it ;)

Do you know what wire (I mean the plastic optical wire, not electrical) I could use if I'm not using UV LED's but just normal colors?
Sep 10, 2011. 6:15 PMduggerpato says:
Nicely done. Looks great, great instructions! Good work.
Sep 10, 2011. 3:24 PMAwesome-aniac says:
Looks good, super easy to make.
Sep 10, 2011. 9:33 AMagis68 says:
excellent idea....i love it
Sep 5, 2011. 8:52 AMjwebb11 says:
Well done and well documented!
Aug 21, 2011. 10:06 AMNo0neLeftBehind says:
now i just gotta pick a usb port to plug it in to
Aug 24, 2011. 8:52 PMTechKid67 says:
If you expand the base a bit, you could even substitute the USB for a small button cell battery. I also believe this would allow no need for the resistor. :)
Aug 24, 2011. 2:47 AMZoDo says:
Cool. I like it.
Aug 23, 2011. 1:48 PMPedroDaGr8 says:
If that is a true UV LED and not just a rebadged purple LED then you should include a warning about eye damage. Extended UV exposure can cause cataracts and other eye issues.

Pro

Get More Out of Instructables

Already have an Account?

close

All Steps Viewing
View all steps of an Instructable on the same page when you're a Pro Member.

Upgrade to Pro today!
11
Followers
3
Author:EricRaines
I'm a natural born inventor and creator with a need to stand out.