Tennis Ball Cannon - 2.0 Piezo Launching System

Wow! I like it. I decided to use Arrid Extra-Extra dry deodorant for the propellant instead of hair spray because 2-1 second sprays is perfect and it only leaves a powder residue instead of glue behind. I added a open fishing reel with 50lb test fishing line. I also modified 3 of my tennis balls by adding a cable to them and adding 3oz of weight so I now launch a 5oz tennis ball over tree limbs so I can erect Ham radio antennas. Another thing it is useful now that it is modified to go over trees is I can now cut high tree limbs. Just fire the weighted ball over the limb you want to cut, then attach a rope to the ball and pull it back over to the ground. Remove ball and attach a chain cutter https://smile.amazon.com/gp/aw/d/B096GBJQ25?ref=ppx_pt2_mob_b_prod_image And trim any limb you want. Lol Really, it works great!

This thing is simply fantastic. I'll get a video up. But I bought it to get my boomerangs out of trees. Sometimes my boomerangs will get caught in trees like 60 80 feet up and I've tried grappling hooks I've tried throw sticks I've tried water balloon launcher with bean bags, and then I bought this. And not only does it get out of trees, but it's fun while I'm doing it. I 3D printed handles and a sight for it so I can knock my boomerang out of the tree from 60 ft and I've done it like four or five times. It's awesome. And if you can get the right air fuel mixture, this thing will launch the tennis ball so loud and so far and so awesome

I have some experience with potato cannons but I could not get this thing to fire no matter what I tried. Huge disappointment

First off it didn’t want to fire but after striking it about 10x.I grabbed a pair of needle nose pliers and bent the tip into the center of the striker.To resemble a spark plug.Now it fires everytime.Other than that I would have gave this item 5 stars.

This unit works well and really launches a tennis ball far. Just be sure to clean the threads for the end cap when you are done using it. Hairspray will make it hard to get the end off the next time you use it if not cleaned. Great product!

This thing is legit! I've always wanted to build a potato cannon as a kid, but never got around to it. And now I get to enjoy something from my childhood with my son (and I don't have to clean up potatoes, since I opted for the tennis ball cannon). It's built solidly, it shoots really far and it's a blast. While I was playing with it in the park with my son some people walking their dogs asked about it, makes sense since dogs love playing catch with balls. My wife wasn't crazy about it at first, but after a while she asked to shoot it and had a blast. This inspired me to try and build a potato cannon with my son, since I like to use my hands. After we built it we'll have a competition to see how they compare.

I tried adjusting this several times to make it fire by adjusting the sparkling unit. The issue turned out to be too much hair spray. I put two, one second sprays in it then it fired great. Big noise! A quarter mile, probably not but it’s still pretty cool. Now I have to try to cancel my return….

Used once didn't fire. Bought hair spray. Went to open it didn't open. So I used my pipe wrench and pliers to open. Didn't budge. Don't waste your money. I've bought tons of stuff on Amazon never had an issue. I guess that's the averages...