Magnetic Coil Gun!




This is a simple gun that uses  magnetic wire! Bassicly how it works is when you charge the six 330 volt capacitors and realease it into the magnetic wire it magnitizes it causing the nail to shoot forward and momementum keeps it going forward. Its is pretty simple and doesn't cost much.

Step 1: Supplies and Tools

6 disposable flash cameras(two shown other four are capacitors also ask for recycled cameras a Wallgeens)
Magnetic wire(found at radioshack)
Two bottle caps with holes in them
Wire, and cardboard for the case
Pliers, tape
Philips screwdriver


Step 2: Getting Capacitors and Charging Circuit

First pry open all the disposable flash cameras so you see the chipboard. Then pick one you want as the charging circuit. Carefully take your pliers and discharge the circuit  by toching both capacitor legs at the same time with the pliers(a spark should occur). Do the same with all the other flash cameras but take the capacitors out by snipping them. Remember don't snip off the capacitor on the charger circuit.  

Step 3: Hooking Up the Capacitors

First snip off the flash on the charging circuit(shown in the next picture).Now you want to connect all the left legs on the capacitors and next all the right legs. Once thats done tape them all together and add another two wires at the end of the sixth capacitor.(i stacked mine but you should make a straight one, that way it is easier to connect all the left legs and all the right legs). 

Step 4: Starting the Coil

First remember the length of the nail determines how long the coil should be.Also you want the tip of the nail to be just barely in the coil. Okay now take your pen and remove the ink(leave the bottom cap in). Now that you have everything lets start! Take  your two bottle caps and tape them to the pen  about the size of your nail. After that leave two inches off it and start to wind the magnetic wire tightly one after the other. Once you'r done with the first coil tape it up and start again backwards, whenever you finnish a layer tape it. At the end leave another two inches. You should have between five to ten layers.

Step 5: Finnishing and Firing!

Now take one of the extra wires on the capacitor and hook it up to the magnetic wire( remember to scratch off the enamel on the magnetic wires at the end). Then put your battery in the charging circuit push the button and once its stops making a whining noise or the light goes to red touch the remaining end of the magnetic wire to the other remaining wire and you should see a little spark and the nail should zoom out. I am not responsable for injuries.



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    12 Discussions


    3 years ago

    Um.. I want to use 6 400v 330uf capacitors. Would the circuit be safe? I'm just a high school student.

    3 replies

    Reply 1 year ago

    You'll be alright just so long as you insulate it should try the new ultracaps there 2.5v but I guarantee they will pack way more of a punch 2600F that's not uf I do believe that's around 5000watts of power storage way more than your 400v @1980uf not even close to 400watts of power storage someone please correct me if I am wrong but......


    Reply 1 year ago

    I am sorry but you are wrong. You need a high voltage so you can get a real pulse in the coil. If the voltage is 2.7 v and the resistance of the coil is 2.7 ohm than 1 amp can be drained through the core wich is barrely enough for a good coilgun. Also the energy of the capacitor is 400 joules, not 400 watts because Energy is a unit over time an watt isnt.


    Reply 1 year ago

    Thanks! Well I already made it!! OMG replying after two years... lol dude It was kinda hard thing to do but I was able to complete the task. However I really reaaaaally do thank for your response.


    2 years ago

    Just buy 6 330uf capacitors, and put them in parrallel. It is much cheaper than buying $120 of camera.


    I have been making and using this experiment for some time. It is comforting to know I am on the right track.


    4 years ago on Introduction

    i don't understand the camera part you take 2 flash circuits and 2 capacitors so where are the other 4 capacitors??


    Reply 4 years ago on Introduction

    any Walgreens or rite aid will have them by the hundreds, just dont tell them you are using them to make coilguns or tasers lol...


    7 years ago on Introduction

    here is a picture of a case made out of cardboard.

    coil gun 001.JPG