heh, my barrel is 3 foot long, and I use 4 inch needles and 1 inch cones.

mine doesnt work well.it wont stick into anything any idease??

its not that you cant blow hard enough it requires a technique kinda use your tongue as a quick release valve

I can never blow hard enough for the darts to go out of the barrel, either i made them too small or i am breathless. I couldn't manage to get the small blue part out of the pen to make it only the barrel. Any tips on that?

i made it so the end of the pen is removeable and i shortened the ink tube so i can fit a dart in the back of the pen but still use the pen

um that is incredibly easy but it sucks if you put lime juice on the end of the needle

still piercing at 10 foots done n working wonders. Cheerz from argentina

The problem with shooting them at people is that they can take it and throw it back at you.

would gluing it instead of taping it work?

how did u roll the cone up tight enough?

Cool! I like to call this the "Blowpen".

i made these before

i made darts like those and i fit it into an airsoft gun... not its terrifying i shot it at a binder made of solid plastic about 5 mm's thick and it went through also piercing another 5-7mm's of paper in the binder

i use a sewing needle with the back end of a shoelace that has ben cut of and frayed at one end

nice !

Any tips whatsoever?

There needs to be an Instructable for creating the paper cone itself...

Great instructable!!! I have found though, that you can make the darts out of spiraled tape and they usually work pretty well. I did have a problem with getting the darts to fly strait but a bit of adjusting usually does the trick. The best part about it is you can shoot it at someone, they can take it and you lose little or no value.

I put the dart in the tube, pulled out the ink stick from the pen, and put the pen back together again, so it's a stealth blowdart-in-a-pen