These lights only cost me about $15 to make. I had most of the materials on hand though. The only thing I bought was the LEDs and the drivers.
Custom LED bars for a computer case.
6 Watts of Blue LEDs
Step 1: Parts & Tools
6x 1W LEDs
2x 3x1W LED Drivers
28" of 3/4" x 1/16" 90 Degree Angle Aluminum (could use 1/2" x 1/16")
Wire Scraps (about 4 ft.)
4x Pop Rivets
1/8" Expandable Sleeving (optional)
Heat Shrink (optional)
Hot Glue Gun
Needle Nose Pliers
Pop Rivet Tool
Step 2: Testing The LEDs
Don't run the LEDs at full power without a heat sink, they will burn themselves up.
Step 3: Straiten The LED Leads
The leads need to be straitened and bent slightly upwards so that the wires can be soldered to them without touching the aluminum heatsink.
I used needle nose pliers to carefully bend the leads.
Step 4: Mount The LEDs
Mark the center and 2" from both ends.
Mount the LEDs with a small amount of super glue. Don't use the super glue gel, it's too thick.
Thermal epoxy would work too, but it's expensive.
Make sure the leads all go the same direction.
Step 5: Solder The LEDs Together
Drill holes just past the LEDs on the ends to pass the wires through.
Secure the connections with hot glue, or silicone to prevent them from breaking.