PVC Slide Whistle
The pvc slide whistle is a modification to the pvc steam whistle which allows multiple tones to be produced by changing the length of the whistle tube with a piston, just like a toy slide whistle. Here are the additional items you need to turn a pvc steam whistle into a pvc slide whistle. Materials •a 1/2'' pvc steam whistle (6-8'' long from the bottom of the whistle mouth) • a large chop stick • a 00 size rubber stopper • 3/8''id, 1/2''od vinyl tubing (about 1/2'' long) • 1/2'' pvc pipe cap Tools • a drill with 1/4'' bit (or one at lease the size of you chop stick) • hot glue gun To make a piston we took a large chop stick (about 1/4'') and sharpened it in a pencil sharpener, then poked it into the small end of a 00 size rubber stopper and hot glued it in place, being careful that it was on straight. To make a perfect seal inside the pipe we put a small piece of 3/8'' id, 1/2'...