How Do You Build A Pen Gun?
• Open up your pen and remove the writing cartridge and spring. • Take the writing end of the pen and re-insert the spring. • Put the ink cartridge in, but put in a small ball of paper, so you know if you lose the spring. • Tape an end of the rubber band to the end of the ink cartridge (sticking out end). • Pull back the rubber band, and make sure it is parallel to the whole “gun”. Let go of the rubber band to fire.
