Also, i entered this in the JOBY Transform it contest, so please vote!
WARNING: DO NOT SHOOT ANY OF THESE GUNS AT ANY LIVING THING. I AM NOT RESPONSIBLE FOR ANY BURNS, INJURIES, OR ANY KIND OF BAD LUCK RESULTING FROM THE USE OF THE PRODUCTS OF THIS INSTRUCTABLE, FOR ANY REASON.
Now, for the fun part!
Step 1: MacGyver Guns: Materials
at least two Sharpie highlighters
Papermate "m" pens (no substitutions)
thumbtacks (not shown)
screw that fits in the small end of the highlighter
matches (not shown)
a way to attach the screw to something solid (shown at the end)
various aerosol sprays: experiment and see which one works best for you
and needlenose pliers might be very helpful
Step 2: Gun #1
This is the one that shoots the little cap
First, you need to disassemble the highlighter, then you can throw away any inky pieces (the tip and the cartridge)
Then, take the cap of the highlighter and use the scissors to make a hole the size of the little part on the end of the cap (see image)
Now, take the cap and shove it as far as it will go into the big end of the highlighter, taking care not to crack it. Superglue it in place.
While that dries, take the little end cap (the "projectile") and cover it in a few layers of the electrical tape and fold over the ends. This makes it airtight so there is no "blow by" when it fires.
After that put some electrical tape over the superglue bond and put the "projectile" on the end
Now carefully insert the thumbtack close to, but not on the small end of the highlighter
Its done! See the "Firing the MacGyver Guns" step if you want to make just this, but if you want to make the rest, read on!
Step 3: Gun #2
First disassemble the highlighter, and throw away the inky parts (just like before)
Now, put the little end cap back exactly where you just took it from, put a small hole in the center, and superglue it in place. BEFORE you superglue, put a small hole in the cap just like in gun #1
QUICKLY, before the superglue dries, put the cap on as if you were using the highlighter normally and put more glue around it
Then, carefully put a thumbtack close to, but not on the cap and cover the superglue with electrical tape
Now its done! Skip to the Firing step, or read on to make the most MacGyverish gun yet!
Step 4: Gun #3 (The Best One, in My Opinion)
First, take out the whole ink assembly, leaving the empty pen
Now, using scissors, pop out the little thingy in the end (make a hole)
Then, carefully insert a thumbtack into the end you made the hole in
Its done! Finally time for the really fun part!
Step 5: Firing the MacGyver Guns
OK. The procedure is simple. Screw it on, spray a SHORT burst of axe or air freshener, etc, into the barrel, then shove whatever you are firing onto the end. You have to work fast so the propellant wont evaporate into the air. Now take out the thumbtack and hold up a lit match or lighter to the small hole, and KEEP YOUR HAND BACK! Dont be stupid and hold your hand right in front of the fire hole, keep it up a little bit. Same goes for the path of the projectile.
You may have to try a couple of times for it to actually work. Good Luck!
Thank you and please vote!