My wife wanted a new fish-tank for Christmas, so I decided to make a two way light for it using white and blue LED's. I made a LED light bar out of aluminum and a power supply for it.
Step 1: LED light bar
I wired 5 blue LED's in with the white ones as the blue light really brings out the color in the fish. The 10 other blue lights are wired separately as a "moonlight" effect.
Make sure that your soldering iron is not set too hot, or you can burn up your LED's (I fried 3 before i realized what was happening)
46" long aluminum bar with a channel down the middle of it
20 white super-bright straw hat LED's
15 bright blue LED's
22 gauge wire, I used yellow blue and black
about 5ft of 3 conductor cable(shielded)
4 pin molex connecter with back-shell and pins
PVC heat shrink
drill bits (various sizes)
countersink drill bit
razer blade(exacto knife will also work)
crimp tool (for molex connector)
soldering iron (with solder and flux)
bench vise (not required but it is handy)
cutting fluid (also not required but it allows you to cut a cleaner hole)
Step 2: Drill holes
I measure and mark my holes, starting with the larger holes for the straw hat LED's. Use a hammer and center punch then drill small holes (I find it is very handy to start your holes small first then use the larger bit, so that the large bit doesn't "wander"). Use the counter sink bit to clean out any burrs. I then measure and mark out the smaller holes for the blue LED's. Center punch and drill them as before. Don't forget to De-burr. The bar can be cleaned if with a rag and a little isopropyl alcohol.