Rapid-Reload Vacuum Cannon: Magnetic Piston, No Burst Discs

I made a new vacuum cannon and use it to blast some unfortunate plants and beverages. Thanks to my sponsor Squarespace you can make a great website easily! Check them out at: https://www.squarespace.com/nighthawk

Vacuum cannons are one of my favorite science experiments for demonstrating pressure differentials and atmospheric pressure. They never fail to get a huge response from a crowd. I've been improving upon my piston operated design over the last year, and while this new version adds some complexity to the design it has a number of improvements as well.

New features of this cannon:
1. Crank operated piston which eliminates the need to tether the barrel down and reduces the cannon's footprint
2. Magnetic piston allows easy attachment of projectiles
3. No home made burst discs required as they have been replaced with plastic cups

Check out my earlier vacuum cannon videos here:
Piston operated cannon v1: https://youtu.be/9ydJXOTf1-4
Follow up response to comments: https://youtu.be/wrYDRNnrTu0
Giant 4" diameter cannon: https://youtu.be/cDoUBJbyZ-8
How to make PVC pistons: https://youtu.be/BCZGWvieJ7I
How to make a vacuum pump: https://youtu.be/UkPLu6mgdWA

Thanks to all my Patrons for keeping these videos possible and supporting me no matter what changes YouTube makes. A special thanks to my top Patrons: Syniurge, Matthew Leitzke, TheBackyardScientist, Enzo Breda Lee, John Johnson, & Thibaud Peverelli! https://www.patreon.com/NightHawkProjects

As of uploading this video I have read over 213,000 comments over the last 11 years of my channel. Keep them coming! Thanks so much for continuing to motivate me to make the best videos I can.