On Jul 15, 5:14*am, Joseph Gwinn wrote:

Why are they unsafe?

Wait until the first time a bunch of swarf suddenly wraps around the
tool, work and chuck and start whipping snot out of the guard. If you
insist on using one make sure it is solidly mounted and you are always
using chip breaker tooling.

Would love to hear your report in about 6 months time.

Dave