Never having taken shop (Catholic schools), I was smart enough to use a small c-clamp to hold the wood, and keep
my fingers out of the way.
The blade grabbed the wood, wedging it against the table, and proceeded to propel the saw up the wood, finally
hitting the clamp, and stopping dead. I turned it off, removed the piece, and turned it back on to see if I did
any damage.
The saw started shaking. I turned it off, and removed dust cover, noting that the elbow was missing.
Any way, the c-clamp took out a dozen or so teeth, remarkably throwing some out the dust exhaust, knocking
off the elbow.
I thought something went whizzing by my head...
So, while I didn't know enough to tighten the saw, I knew enough to fashion a jig.
(It was also an excuse to buy a few other toys.)
Geez dude! Were you wearing safety glasses?