Cripes Woody - I think you're even luckier than I realised, now that you've given us that detail: in essence, you got to let us know how it feels to have a very strong caveman try to stab you to death with his wooden spear...:shock:
Devon - in theory it can be either piece. Kickback is simply what happens when part of the stock comes into contact with the rear of the spinning blade: as this bit is accelerating it 'up' and 'back' (toward you), it can, if it grabs the piece effectively enough, do just what it did here. In reality, it 'tends' to be the inner (ie between fence and blade) piece which is more dangerous, because it gets 'stuck' between the 2 for one reason or another, and the resultant 'explosive' release is rather exciting...
That said, in either case, the first line of defence is a properly fitted riving knife (aka 'splitter'), which will hopefully stop the blade being able to get a good 'bite' on the potential missile. The second is an overhead blade guard: not specifically aimed at kickback (more about keeping your hands out of the blade area), but it 'may' help slow the emerging missile down. The third is featherboards/hold in wheels etc. They'll help feed everything in properly, and should stop any 'twisting in' to the back of the blade. And, without being rude to woody in any way (we've all been there :roll: ), the last is to stand to one side without distractions... Easy to say, hard to keep in mind at all times.
I had one that left me actually trembling/shaking yesterday. I was using a chop saw to cut off some lengths of pine - about 1" by 2" cross section.
Because it was quick and dirty 'carpentry' rather than cabinet work, I wasn't clamping the lengths in for absolute accuracy - all I wanted was 'good' square ended cuts. In a hurry, hold first piece against the backstop with left hand (long end to the right): think safety - yes, my flesh is a good 6" from the blade. Make cut - no probs. Push right hand length 'in' to the left for the next cut. Grab projecting waste with left hand, lower saw with right - "BANG SMASH INTENSE PAIN IN LEFT THUMB _ WTF?????
"
For a split second I thought I had somehow cut my left thumb off.. I was scared to look, and felt sick. Looked down and nearly cried with relief - still there, so what on earth had happened??
The 2" long cut off from the first cut had been lying on the chop saw 'table' (the round platform), but forward and clear of the fence area. As I lowered the running blade, the general vibration moved it into the path of the blade. It got grabbed, and spun/accelerated into my thumbnail, and then into the piece I was cutting, ruining the end. Gonna lose the bruised nail - small price for carelessness...