On Tue, 20 Jun 2017 14:12:33 -0700 (PDT), wrote:

I've used a diamond hole saw on wood and it does work, but slowly (about 1 minute for 3/4" pine. The top of the hole was cleanly cut, but there was black scorching inside the hole, and a rough exit hole. I made a video of all of this on youtube. You can watch it he https://www.youtube.com/watch?v=n6cMfDtzQu8

It's possible to get the saw so hot that it weakens the braze that holds the diamonds in place.
In other words, it could be a quick trick for cleaning the diamonds off the saw... ;-)

--
croy