Bright Luxeon LED Bike Light

Step 18 Prepare for epoxy

Connecting the Luxeon Star to the cap is important for two reasons: One, you dont want the LED to fall out. Two, you want heat generated by the diode to transfer to a heat-dissipating object. Epoxy is used in this project because it eliminates the need to drill more holes in the copper cap and it offers a lot of heat transfer surface area. As you know, most epoxies like a clean surface area in which to bond. Clean the cap by putting a drop of rubbing alcohol on a cotton swab and wipe away any dirt and/or oil.