In my last instructable, I showed you how to make a normal vuvuzela. Now I will show you how to make a pocket-sized one that still packs a punch and is inexpensive.
Due to its size, this mini-vuvuzela has a bit of a higher pitch than its bigger brother. But it's still in the same decibel range, at a fraction of the size! Also, this is not really a "real" vuvuzela. It's more of a horn that makes a similar sound. But it is still fun and has that "annoyance factor."
Now I didn't come up with this concept myself. I got the idea from some youtube video from Germany of a similar device but couldn't reproduce it. Then I saw instructables featuring some film canister air-horn and it allowed me to complete the puzzle.
Now let's begin!
Step 1: Materials
-One 4" long piece of PVC. I used a scrap chunk of wiffle ball bat but PVC will work just fine. (PVC with thinner sides around 1mm, that is thinner then standard PVC which is about 3mm thick, is suggested as it works better) This can be free if you have scraps.
-One empty water bottle. Free.
-I picked up a funnel for pouring oil at Home Depot. $0.99 (optional)
-One Latex balloon. This can be substituted with a shopping bag or latex glove. Free.
-One rubber band. Free.
You will also need a hot glue gun, tape, a drill, an exacto knife, and a saw for cutting.
Step 2: First Things First!
Using that line as a reference, cut the spout out with your knife. Make sure it slides into the PVC. It must be able to be pushed in.
Keep the cap on and push it down the PVC to one opening. It's handy to have a marker around to slide it in. Push it towards the end and remove the cap. Part of the spout should protrude from the PVC.
Step 3: Drilling Time.
Step 4: Adding the Balloon.
Stretch that balloon cutout over the top of the water bottle end. Don't make it too tight or too loose. Too tight and the balloon rips. That's why I had to switch to the orange one.
Now place a rubber band over the top.
Step 5: Airtight Seal.
Step 6: Funnel. (Optional)
Basically, I estimated the width of the PVC and applied it to the funnel. I drew a line for reference and cut. It was right on. Now hot glue it to the open end of the PVC.
Step 7: Finished!
You have now completed the pocket-sized airhorn/ vuvuzela! Now try it out!
Step 8: Usage
For best results, and this was through trial and error, hold down the rubber band and balloon keeping it fairly tight while playing. This keeps the balloon taut. If the balloon is loose it won't make sound.
Now go outside and start playing this for everyone to hear!
How tight the balloon is, the position of the bottle and the type on funnel will determine how it sounds. It's very unlikely two will sound exactly the same. Experiment with it!
Step 9: Troubleshooting.
1.) The most common problem is the balloon not being fitted correctly. Remember, the balloon needs to be tight, if you see folds or wrinkles on top of the balloon, pull on the "flare to make it tight again.Try repositioning it and moving the bottle spout around a little. It should also have a rubber band around it and flare out underneath. If you cut or tape this flare, it will stop working.
2.) If that is not the problem then the balloon may have a hole. This would be hid under the rubber band and allow air to escape. To fix, remove the rubber band and check the balloon.
3.) If number 2 wasn't the issue then most likely you don't have an airtight seal. Check step 5 again to make sure you sealed it correctly.
Those are pretty much all the possible issues I've experienced. If you have any others please contribute.