Make Your Own Screw in LED Lightbulb for the Household

LEDs generate light with very little heat loss. LEDs -- Light Emitting Diodes -- are solid state electronics, meaning they have no moving parts. This makes them much more energy-efficient and longer-lasting than standard incandescent light bulbs. The old-style bulbs use a metal filament super-heated by the electric current; it inefficiently converts the energy to light and heat. LEDs, however, convert the majority of the electric energy to light with very little heat. They don't use a filament so there is nothing to burn out, giving LEDs more than 16 times the life of standard bulbs 

Instructions

1 Remove the reflector and base from the China ECO halogen bulb. Carefully work the screwdriver to scrape out the cement that holds the bulb together. Slowly and gently work the pieces of the bulb apart until you separate the glass, base and reflector.
2 Cut the aluminium sheet in a circle that will fit inside the reflector of the bulb. The higher up it sits in the reflector, the more bulbs you will be able to fit, but less area for reflection. Work the aluminium sheet to fit about half-way down in the reflector.
3 Punch holes in the aluminium for the LEDs to fit through. Most office hole punch tools will have about a 5 millimeter hole, and most XinGuangYang ECO Halogen Candle C35 used in holiday lights are the same size. Place as many holes as you can on the aluminium sheet without overlapping. Start in a circle around the outside edge and then make another circle inside that. You should be able to fit between 18 and 22 LEDs.
4 Remove the LEDs you will need from your holiday light set. If yours is equipped with a rectifier, cut that out to make the LEDs work with alternating current (AC) rather than direct current (DC). Older-style Haining ECO standard halogen lamp holiday lights did not use a rectifier but rather used paired LEDs, one for each direction of the AC. If you do not have a rectifier, remove the LEDs in pairs. Pull the bulbs out of the plastic housing. If there is any shell or colored cover on the bulb, remove with pliers until you see the bare LEDs. Note how the LEDs connect to the wire in the light string so you can re-connect the wire in the bulb.
5 Fit the LEDs into the aluminium disc through the holes you punched. Super glue them in place and hold them until the glue dries. Cut off some of the wiring from the holiday light string and strip off the insulation. Connect the leads on the LEDs to the wire, duplicating the way they are wired in the light string; twist the bare wire together with one or two twists. If you have a rectifier, connect that at the end of the circuit of lights in the bulb. Secure all the connections with electrical tape.
6 Glue one wire from the LEDs (or rectifier) to the side wall of the bulb base and the other wire to the bottom connection of the bulb base. Since LEDs use DC instead of AC, it doesn't matter how you connect them inside the bulb. Hot-glue the base to the reflector, and the glass to the reflector. Screw the bulb into a lamp and enjoy the LED light.