This AM I was finishing off an outdoor project - little foot-stool to
go with an Adirondack chair I'd built. I needed (or wanted - for
purposes of over-engineering) a couple of 45 degree angle braces to
control racking stresses. Grabbed a 24" long, 4" wide, 7/8" thick hunk
of white oak (my preferred outside furniture wood) scrap, set the
mitre gauge and ran it through the saw to get a 45 degree triangle.
Next cut was to be a 90 degree cross cut of the rest on the board to
get the second triangle. First cut was absolutely normal through blade
exit and then, BAM! The offcut triangle headed to the rear of the saw
at impressive velocity (I never saw it), hit the front apron of my
bench and landed on the floor.
Rurned saw off! Checking the cut on both pieces (offcut and main
piece), showed nothing strange, no burns, saw marks, gouges, no
nothing - just a fractured 45 degree corner where the offcut triangle
hit the bench.
Somewhere in this NG I read the suggestion (now a BIG RULE), that says
no body part shall ever be in the offcut throw zone. I've tried to
follow that rule as a religion and am damn glad I did so this time.
That hunk of WO would have hurt! I have no clue what happened to
cause the throwback, but am damned glad I wasn't in the way!
Be careful out there, bad stuff happens (as my old NCO used to tell me
just before the s#$% hit the proverbial fan).