This is another entry in the Weekly challenge : Chopsticks.
-Chopstick( about 3 inches)
-Pen tube(1 1/2 inches)
-Metal rod(Shaped like a pin)
Step 1: Making the pin
Cut the tip of the nail off like so.
Step 2: The firing pin
Drill a hole with a drill, just deep enough to be able to put some superglue in to secure the nail.
Step 3: "Spring" Mechanism
Tape a small rubber band around the pen tube like so.
Step 4: Securing the rubberband
After taped, wrap the thread around it tighly, to ensure the rubberband will not fall out. Then tape over the thread.
cut off the extra rubber band, and thread( If any is hanging out)
Step 6: Finding where to drill
You will then put the firing pin, in the tube like so. While the rubber band is on the chopstick(Notice mine is on the side for demonstration purposes) Pull it back as far as you can and mark the spot closest to the tube.
It should then look like this