Table saws can produce an unhappy event called kick or kickback. Mine did, and I have the pictures to prove it.
RayGirling.com has an informative piece called Tablesaw Kickback – The Nightmare Explained which includes diagrams and information about some of the causes of kickback from table saws.
I used his article to confirm my calculations of projectile velocity and energy:
|Blade Diameter (in)||10.0|
|Energy ft lbs||74.7|
When I experienced the kick, a small square approximately the weight of a golf ball shot back from the saw at 149 mph, carrying about 75 foot-lbs of energy.
Although I was able to minimize the damage by blocking the projectile with my crotch (ouch) the projectile continued past me into the door of the wife’s car.
Oops. Now I’m in trouble.
The Four Rules should not only apply to firearms. Be careful out there.