Awesome safety saw

A table saw is reconfigured to sense electrical conductivity; when it does so, it goes from 5000 RPM to zero in milliseconds, destroying the blade but preserving the finger.

The demonstration is a little misleading in that it appears the finger needs to be on the table (?) so the electrical conductivity can be sensed, and when the inventor used his own finger he touched the teeth almost tangentially; had he moved the finger into the blade quickly there might have been an injury.

Still, it's a remarkable invention.

Thanks, Skip, for forwarding this.