during my long-ago childhood i made some bullroarers after a photo in a book about australian aborigines. they were only about 4inches long and thanks to lack of tools and my not-so-very-developed woodworking skill rather crude but they worked well.
recently i tried to make a bigger and much-better-crafted one of ca. 8in x3-4in wide with an oval profile, BUT not much noise at all, no matter what kind of cord i used. my guess is that the perfect noise gets influenced by the profile of the roarer as well. i did a bit of a research in attempt to find a solution, but no success so far- all pictures show only the flat side... .
can anyone enlighten me please?
recently i tried to make a bigger and much-better-crafted one of ca. 8in x3-4in wide with an oval profile, BUT not much noise at all, no matter what kind of cord i used. my guess is that the perfect noise gets influenced by the profile of the roarer as well. i did a bit of a research in attempt to find a solution, but no success so far- all pictures show only the flat side... .
can anyone enlighten me please?