Plastic Bulb

Introduction: Plastic Bulb

I want to thank the reception that has had the roof lamp

project, I am the first surprised, I did not expect it. Thank you all.


Based on one of my previous projects, I have now used two plastic bottle caps of different size and capacity to match the size of an E27 bulb socket, it is possible that it can resemble the type E28 that is the one they have In the USA. I intend to demonstrate that this can be done. I do not say that it is perfect but possible and can be improved. To the bushings I have made incisions transverse to the thread to be flexible to screw it. It is better explained in the video.

We need: 2 bottles of different size or, if not, a bottle with the approximate size of E27 or E28 (2.7 cm or 2.8 cm), 4 led of 1 watt, power supply, silicone and bars, thumbtack if it is Large wire, tin and welder, a piece of copper bare wire (network cable), cutting tools, knife, cutter, glue (cyanoacrylate), plastic film or food packaging, thermofusible plastic (optional), adhesive tape , Water if distilled better, varnish to protect the diodes or transparent nail polish could also serve, copper wire (optional).



Step 1:

Cut the bottlenecks to join them, some of them get to round their base with the hot welder, I also made a few cuts so they could be inserted better. The one that has the ideal size is 2 liters or 1.5 liters, but it is too big and weighs a lot so to use it would have to cut it and reduce its size or capacity.

I choose to use 2 different bottlenecks. The other type of bottle that used was of 0.33 liters.

Step 2:

Pass the power supply cables, increase the size of the cables that go to the cap with wire to close wraps, that is, those closures that carry a thin wire with a plastic coating, through the cap, weld it A pin and paste. I added some tin to the pin to increase the size and make good contact.

The side contact pulls it out and hooks it through the slot.

Step 3:

The power supply was wrapped in plastic film, but perhaps it would have been better to use some encapsulation, either with thermosetting plastic, resin, glue ... Like the Leds protect them from oxidation and use deionized water to reduce the conductivity.

Step 4:

Attach the bulb to a socket since the lamps I have usually are plastic inside it, with a few small metal bands. When using a short wire was difficult to match so use a socket that is totally metallic in its interior. The way to improve this could be by using a wire stripped of the 0.3 millimeter thick copper net that would run the thread through the inside and stuck with cyanoacrylate.

Do not use cyanoacrylate glue in the project but it would certainly aesthetically improve it. To facilitate the screwing you can add graphite on the thread or what is the same thing, pencil lead and even the graphite bar inside a pile.

Step 5: ​Links:

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