I got bored one day in school so I took out some pens, scissors, and duct tape and did this in about an hour. This is the first crossbow I've seen that's collapsible.
Step 1: Materials
To build the crossbow, you need-
â¢3 Normal Disposable Pens with tubes
â¢1 or more Pilot G2 ink cartridges (at least one empty) 1 is fine, the others are for ammo.
â¢a couple of rubber bands- you only need one, but you need to see which one fits best.
â¢Good Scissors (for cutting pen in half)
â¢Hot Glue Gun (recommended)/Super Glue/Duct Tape
â¢Small Scissors/Screwdriver/Drill (something to drill holes in the pen tube with)
Step 2: Cutting The Pens
So first you need to dismantle all of the disposable pens, and just keep the tubes. You can keep the ink cartridges if you want to use them as ammo later. You are going to cut one of them in half in the middle. Then, take the empty Pilot G2 cartridge and cut it off right under the yellow goo. It gets everywhere so don't cut the part with the goo.
Step 3: Making The Ammo Track
Take one of your pen tubes and cut it lengthwise down to about a centimeter from the end on both sides. SIDES not ends. Then cut away one side to open it to put in ammo.
Step 4: Drilling The Hole
You are going to take the third (base) disposable pen tube and drill a hole in it wide enough to fit the cut piece of G2 cartridge. It has to be tight enough to hold it in place, but loose enough to pull it out when you want to collapse it. You can use a drill, scissors, a screwdriver or something else sharp.