Before we start, I'd like to explain some safety issues here. Number one: don't shoot anything at anyone or anything living. I don't use any of these devices in terrorist acts, nor to threaten or harm any organic life form or anybody's property. All shooting should be done in a controlled environment. Better yet, don't shoot at anything. Just make whatever and stare at it. Or don't make it at all. Yeah, this is actually all informational. Nothing here actually exists. Computer animation and men in suits. That's what I'll tell 'em!
Many of these darts were designed because I sought to break out of your traditional nail dart, explosive dart, etc. I want to show the other people who share my interests that a little bit of ingenuity can prove really awesome if put to the right use. So sit back and grab a drink, there's a lot of really, really cool stuff to read through here.
Let's start with my airgun. It's cheap, easily made, modded and added to. I use standard 1/2" PVC. No use for expensive and harder to get high-pressure stuff when you're only shooting at 20psi. I do NOT want to hear crap about my non-pressure rated schedule 40 PVC, I KNOW the risks!!! My gun has a standard ball-valve trigger and is pressurized with a small hand pump that is now attached to my gun, unlike in this first picture. I am able to change barrels and barrel attachments using the joint at the base of my barrel. The tubing coming from the pump to my gun was obtained from a LEGO set that used air hydraulic pumps. It can be ordered online over the LEGO website for a nominal fee. I use sports-ball filling valves that fit perfectly in the tubing to attach to my pump. The spray-painted section of my gun was salvaged from a derelict marshmallow gun that apparently I thought it was a good idea to use primer and glue on. Any more questions about my gun or anything in this Instructible should be PMed to me.
Step 1: LED shootie
The design is simple, using only some paper and tape, you can transform any basic throwie to a shootie. Take the two prongs of an LED and put two 1.5v button cell batteries (or one 3v cell) between them. At the same time, a small rare earth (Because nobody can spell neodymium) magnet is placed on the outside of one or both prongs of the LED. The whole setup should then be covered in duct tape to hold everything together.
In order to adapt it to fire from a blowgun, we need to put it inside a cone enclosure. Make a basic cone from paper and cut it off so that it fits in whatever sized tube you're working with. Cut off the very point of the cone so that the tip of the LED sticks out. Hot glue the LED and batteries in the cone and you're all set.
Uses for this include being a guerrilla graffitist and lighting up big metal things, or using it as a signal at night. I figure a streak of light shooting through the night would look pretty awesome.
Video below. It's hard to see for the camera, but it's plenty visible normally.