A pocket-sized electric torch is not difficult to obtain at any store. But is it worth spending money on a lantern made by skilled Chinese craftsmen when you can make your own from the simplest and most affordable materials? Such a flashlight will not only serve you faithfully in the dark, illuminating the path, but will also help you believe in your own creativity.
It is necessary
- - an electric lamp for a pocket flashlight;
- - flat battery for 4.5 V;
- - "finger" battery ";
- - insulating tape;
- - disposable syringe;
- - thin colored telephone wire;
- - glue (epoxy resin);
- - knife.
Instructions
Step 1
Assemble the simplest flashlight from a miniature light bulb and a square battery. Attach the light bulb to one of the battery terminals with insulating tape. Leave the second contact free. When you press the contact, the circuit will close, and the lamp will light up. This pocket luminaire has two drawbacks - substantial dimensions and the absence of a directional beam. To reduce the size of the flashlight, you need a small "finger" battery and housing.
Step 2
Find a disposable syringe that fits your needs. It is most convenient to use one with an inner diameter of 16 mm and a capacity of 10 ml. Use a knife to cut off the protruding cone of the syringe onto which the needle is placed.
Step 3
Using a drill or an ordinary knife, make a hole in the bottom of the syringe for the lamp base, placing it strictly in the center. The diameter of the hole should be such that the base of a miniature lamp is screwed into it with an interference fit. The second hole left over from the removed cone is for the thin wire from the telephone cable.
Step 4
Remove the plunger from the syringe and cut off its tapered surface with a knife. Now attach one end of the thin wire to the piston. Cut a disc with a diameter of 15 mm from a piece of tin, make a hole with an awl near the edge of the disc and fix the bare and stripped end of the wire in it. It is advisable to solder the wire, but it is quite enough just to screw it on. Glue the disc to the cut surface of the piston with superglue or epoxy.
Step 5
Pull the other end of the telephone cord into the syringe body and out through the small hole. Wind the wire tightly around the lamp base. Insert the "finger" battery into the case. Assemble the entire structure into a single whole. To prevent the battery from dangling in the case, wrap it with several turns of insulating tape.
Step 6
Turn on the flashlight by pressing the piston. Switching off is carried out in the opposite way. It is enough if the piston has a free stroke of 1 mm. Now you can safely walk towards night adventures.
