“My husband must never know of this” is the best comment I’ve had on the Bazooka video.

Whatever you call it, this is FUN. be very careful and have an adult around to make sure everything is done safely. wear safety googles and ear protection and never point this at anyone or anything.

A big thanks for William Gurstele for writing his book “Backyard Ballistics” check out his site here.

You can buy his book here

Here is a drawing of the potato cannon we made. Its based on Mr Gurstele’s plan, there are other designs on the web. I like Mr Gurstele’s book because you learn about physics and make cool stuff.

I’ve gotten a few queries about the ignitor and a few compliments as well – not often that happens. Some people have not been able to get the ignitor to spark in the tube. I started with the ignitor screws almost touching, and making sure it sparked, then I slowly backed the screws away from each other to the widest point where I had a spark.

Another viewer suggested using brass screws, which conduct electricity better. This is a good idea. Its also important that the connection from the ignitor wires to the screws is a good one. I used crimp on connectors, maybe you could solder them as well.

Check out these other posts you might like:

• How to make biscuits with Rachel Wharton and Charlie Shaw
• what to do with garlic scapes?
• “Well You Should Be Watching the GardenFork Podcast”
• How to make yogurt in a cardboard box & the Gardenfork yogurt recipe
• How to make pizza dough and bake pizza