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Mechanical Pencil Gun

Step 5Completion

Completion
With the rubber band attached to the eraser shaft, slide it back into the barrel. The gun is now complete. To fire, pull back the eraser shaft, load ammunition into the muzzle, and release.
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30 comments
Mar 18, 2011. 4:09 PMcwestrum says:
you can put staples or needles in the wax too.
Mar 18, 2011. 4:07 PMcwestrum says:
I like to use a little bit of wax candle or cheese wax. It sticks to the black end and you can stuff it so it compresses the air and hits harder.
Jan 11, 2010. 8:27 PMsportguru says:
Hahaha. I used one of these and got expelled for it..
Jan 26, 2011. 4:22 PMawesomekitteh says:
yeah sure ya did
Dec 23, 2010. 6:46 AMHiddenBlade1234 says:
it cool im using small screws that i had from other projects
Dec 10, 2010. 3:12 AMaarrnnoo says:
simple but cool :)
Jul 30, 2008. 7:16 PMmeatygut says:
i did but it doesn't hurt or anything, do u have to use bb's? cuz im using things like pebblez, dog kibbles and bird food, but nothing work
Oct 29, 2010. 8:10 PMletnetik says:
I used small cut up skewers cut off the grayish part that sticks out, loaded the pieces into the grayish part of the pencil works perfectly!
Mar 17, 2010. 11:50 AM175airsoft says:
Use little knex pieces i made one and that works best Once i was in class and i accidently shot my teacher but no one admitted it .
Mar 14, 2011. 6:14 PMcookie38 says:
Epic dude i wont forget u .u r my idol will you be my friend
Dec 10, 2009. 10:32 AMdirtnap says:
Wow man. Dont use bb's. What you do is get a piece of paper and wad it up to the size that fits your barrel then staple one end of it, and make the staple pointy so it can hit the victim and go into em'.
Aug 13, 2008. 12:57 AMhoogilyboogily says:
hey wat r bb's?
Oct 2, 2011. 7:23 AMjbyrd117 says:
butterfinger bb's
Oct 27, 2008. 2:02 AMruntherd99 says:
Ball Bearings
Dec 18, 2010. 7:21 AMAir_Assassin says:
No they are ball bullets
Dec 18, 2010. 7:18 AMAir_Assassin says:
No they are ball bullets
Nov 28, 2010. 3:29 PMDacrazyDude says:
ball bearings are too heavy to fire out of a pencil gun. i think bbs refers to the kind that are shot out of an airsoft gun
Aug 16, 2010. 5:09 PMDog Tennis says:
Just a little tip, I personally find it better to have another rubber band and wrap it around the inside shaft right next to the eraser, i have the problem of the shaft getting stuck whenever I fire, its keeps it from jamming up, and its quieter too, so there, if that makes any sense ^^
Feb 15, 2010. 10:22 AMRoxas1313 says:
You know what would be even cooler,you take a jacket or a sweater,then take your mechanical pencil,then measure it to where you want it to be(under arm or above the arm,either one,it has to be near the wrist)now once you make that measurement,cut a hole about 3/4 of mechanical pen gun is,to where it could fit.Now you want it steady and all,so take some rubber,small rubbers,so it can be tight,and put it around your arm and your pen gun,put it where it wont move.Now you have a secret pen gun,just like in assassins creed II.
Jan 12, 2010. 4:35 PMmontoya_83 says:
i can make a staple shooter out of a mech pencil. u take off thebottom part where the lead comes out, then you take a staple and put it in, then u pull back on tha eraser end andit shoots hella fast.
Feb 13, 2009. 5:38 PMEPL says:
this is a cool instructable and very effective. little pieces of tin foil are good ammo. everybody in our class has one so we have wars.
Dec 10, 2009. 10:33 AMdirtnap says:
i aint tried to get tin foil yet. Good idea. I bet it works good, but does it hurt? Most ammo doesnt unless you hit them on raw skin. Where hornets like you'd shoot outta a rubber band Hurt like hell just about anywhere.
Dec 12, 2009. 6:31 PMAWESOME9802 says:
We call them wasps in our school, but they got banned. If a teacher even sees you with a wad of paper, she'll put you in detention.
Dec 30, 2009. 1:05 PMi like mayo says:
we made them to. But if we get caught with a rubber band we get expeled i learned that the hard way.
Dec 10, 2009. 7:57 AMdirtnap says:
Yea, these work one GREAT i have one in my pocket right now. If you use stingers. it takes a lil while to make like 3 seconds or so but they have to fit just right. And if you cut the lil end off of it you can get a lil more power out of it and if you use a  tighter rubber band. I have shot nails outta mine from like 6 Foot and stuck it in teh wall.
Jun 16, 2008. 10:18 PMruiqim says:
Great design, but the barrel keeps cracking whenever I use it. Anybody got any tips?
Jul 30, 2008. 8:10 AMpadricjoe says:
maybe use a thinner rubber band or dont stretch it that much.another thing maybe u could wrap another band around the eraser shaft so that when it hits the end of the barrel it acts like a shock absorber,hope this helps
Mar 24, 2008. 6:40 PMKingrayben789 says:
i used mine at school but used paper as ammo and me and my friend had a lil battle and shot the teacher by accident
Jun 16, 2008. 9:40 PMruiqim says:
YOu shot the teacher?!!! What did she do to you?
Nov 19, 2007. 4:43 PMpacmanjones says:
thats amazing and simple
Jun 8, 2007. 6:48 PMNoobinator says:
Made it with just 1 rubber band. Gotta use what you have around you :)
Jul 15, 2007. 11:44 AMdanger boy says:
yeah i don't even have a pencil so i used paper. (and lots of it to make it sturdy)
May 30, 2007. 12:46 PMsparetimer says:
dude this rocks!.....i cant seem to put the whole thing together.lol
Apr 18, 2007. 4:54 PMmatt_the_awsome says:
i got a bunch of Q: can i just tie the rubber band hooked to the clip? whats the muzzle? what do i do to make it fire? thanx hope you read this and answer
Apr 6, 2007. 8:57 PMthe fat hobbit says:
it works with other pencils this is fun
Apr 7, 2007. 7:00 PMAria_J says:
YAAAAAAY!!!
Apr 8, 2007. 12:01 PMthe fat hobbit says:
it hurts like hell if you pinch your finger in the space where the barrel and the eraser meet
Mar 23, 2007. 4:02 PMcannedsheep says:
cool i'll try it out as soon as i get a bic mech. pencil like the design friend of mine did the same thing but with springs and a lock and load system
Mar 17, 2007. 7:03 PMpandimonium says:
haha. it hurts even more if you dont put any ammunition in and fire at close (i mean CLOSE) range. :)
Oct 23, 2006. 8:05 PMClass_Clown says:
I cant believe kids never use this at MY SCHOOL!!!!!!

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