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This instructable will show you how to make a neat looking and sounding kazoo from PVC pipe, a tee fitting and a plastic bag.

Step 1: Materials Needed

You will need a piece of PVC pipe about ten inches long. I used 1/2 inch, but other sizes will probably work as well.
You also need a tee fitting the same size as your pipe.
Finally you'll need a small piece (about 2 inches square)of a plastic grocery bag.

Step 2: Cut the Pipe

Cut the pipe into three pieces. The sizes are approximately 6 inches, 3 inches and 1 inch. They don't need to be exact. You can cut these with a saw or buy a PVC pipe cutter for about $10 (I'd suggest the cutter).

Step 3: Add the Diaphragm

Take the smallest piece of pipe. Hold the piece of the plastic bag on one end and insert that into the "top" of the tee. Push it down until it's snug but not too tight. You may have to wiggle it around until you get the best sound.
Then add the other pieces of pipe, one to each end of the tee.

Step 4: Playing the Kazoo

Hum into the 4 inch end. The diaphragm should vibrate. If it doesn't, take out the short piece of PVC and try again. If the piece of plastic bag tears, just use another one.

You can make all kinds of variations of this design using different lengths of PVC and different connectors.

Have fun!!!
<p>Simple to make, works great I cut 6 for a S.T.E.M. Camp in a few minutes. I did sand all the edges so the boys would not get cut on any sharp edges. I took less than a minute to assemble. Great idea my older 16 yr old life scout loved the prototype.</p>
<p>I made it! Great Instructable!</p><p>I live in a &quot;regional&quot; area of Australia, I wanted to try a kazoo to accompany my wife on her ukulele. 30km's to a music shop selling cheap kazoos or make my own. No contest! Tees I got had dot stops, not an internal shoulder, so I cut and inserted a ring of pvc to create a shoulder. Inserted a rubber &quot;O&quot; ring on top of that shoulder, inserted &quot;membrane&quot;, then small PVC length, (sanded as per motleyjust's comment). Hummed into it, frequency range is lower than my voice, up to higher than my voice! Better range than a bought one! AND <strong><em>MUCH</em></strong> LOUDER! An afternoon of fun produced noises from a duck quack to a mosquito whine! So impressed I will add a guitar pickup to make it into an electric kazoo, and later, a pitch to midi converter and create some imaginative sounds. Oh! the hole in the short length of tube, (holding membrane in place), is to stick a rod in to assist in twisting the tube out when replacing the membrane!</p><p>Thank you Author!</p>
If you use fine sandpaper to smooth and round the edges of the pipe that the diaphragm goes over, it is a lot less likely to tear. I am curious as to why you say it is a "professional" kazoo.
I called mine a "professional" kazoo, because it looks more like what you would buy in a store than the other kazoos on the Instructables site.
Sorry about the typo in step 4. The first sentence should read "Hum into the 3 inch end."
you know that you can just change that?

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