Instructables
Before we get started I want tom let you know what a vortex cannon is. A vortex cannon is a toy that fires doughnut-shaped air vortices — similar to smoke rings but larger, stronger, and completely invisible. Ok lets get started the stuff that you will need are: a paper cup, a plastic garbage bag, rubberbands, tape, a box cutter, a bolt, a end cap nut, a small piece of wire, three popsicle sticks and  hot glue gun with hot glue. This project was made at the TechShop in san jose. The TechShop website is www.techshop.ws .
 
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Step 1: Step 1: The Body

Picture of Step 1: The Body
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What you are going to want to do is get the cup and cut a hole in the middle of the bottem of it. you should leave a 3/8 to 1/2 of a inch space between the side of the cup and the hole. Next you need to cut about a 1/2 inch of one end the popsicle sticks off, so that the popsicle sticks won't stick out of the cup. Then glue the popsicle sticks on the inside of the cup so that they are eveny spaced on the inside. When that is done you need to cut holes around the bottom of the popsicle sticks so that the rubberbands will fit thew them. Pull the rubberbands through the holes and loop each one around itself so that they will lock in place if pulled. and that is the main body of the cannon.
darkkf1 month ago

i tried raping the wire like you did in step 3, but it's not working out. any pointers? am i not using enough lube or should i just put on some mood music?

how do you put smoke in it?
pretty cool
jakepark1 year ago
cool! IVE GOT TO TRY THIS. thanks for the ible