Make sure to post pictures of your finished bullroarers!
Here are my answers to the Make-to-Learn contest questions:
What did I make?
A bullroarer! How they work: As they rotate around you, they also rotate on the string; this in turn vibrates the air, producing sound. Tools I used: a hatchet and mallet, drawknife, a hair-dryer, and my pocketknife. Materials: a piece of cedar, jute twine and some beeswax.
How did I make it?
I first learned of them when my assistant scoutmaster brought one of his to an event. I then decided to make one. I make them on my own. In this case I was making it for someone else, to be shaped similarly to one I had already made, so it stayed the same.
Where did I make it?
I made it at home in my garage workshop. I made this one for someone in my scout troop.
What did I learn?
I learned that I need to make future bullroarers heavier. There weren’t any challenges or surprises. I like the beeswax finish on the cedar wood. When I make another one, I will make it a bit heavier.
Step 1: Design
The design of the bullroarer is mostly a matter of taste. As far as I know, any shape will work as long as it's not too wide or heavy.
Here are a few links that provide some great information: