Found this while looking for more info on how fast wood kicks back.
For the love of all your body parts do not try this!
No, really. I’m not a liability warning guy. But this guy is really, really lucky to still have all his fingers.
And here’s some calculations by someone who has had a physics class more recently than I have. In case you’re lazy, he posits 90 mph for a 4’ 2” x 4” on a typical saw. Significantly les than the ~150 mph theoretical limit, but still a lot of energy flying around ready to do damage to you and your shop.
-- Grace & peace, Chris+