I have been involved in another forum discussing the Sawstop tablesaw a member there was curious about. It began with the usual ups and down and quips about its inability to cut hotdogs etc, Then out of nowhere Stephen Gass chimes in(about a yr too late) in response to a comment I had made regarding the use of guards and pushsticks. Heres his reply to another member there named George:
" George., Prior to the time we had our saws out in the field there was a lot of speculation about what would happen in actual accidents on SawStop saws. We had done a lot of tests with hot dogs, but no one really knew how fast hands hit saw blades in the real world. I had some guesses based on the physics of what happens in kickbacks and how fast material is normally fed, but no one, including me, could say with certainly how fast hands would be going and, as noted in our manual, the speed of the hand approaching the blade affects the depth of the injury.
That said, we now know the answer to this question with certainty. We have had almost 1000 reported finger saves on SawStop saws in the last 6 years. Of those accidents, around 1 in 20 requires stitches and in no case have we seen a hand approaching fast enough for the blade to amputate even a single finger. So, the answer is that unless your accident turns out to be extremely unusual, SawStop technology reacts fast enough to result in a relatively minor injury.
Interestingly and contrary to what Tommy would guess, our data shows that guards and push sticks are not sufficient to prevent accidents. In our finger save report form we ask people whether they were using their guard and whether they were using a push stick. About 70% of the reported cases of a blade contact accident, the guard (18%) or riving knife was reportedly being used. Even more strikingly, in almost 30% of the cases, a push stick was being used. The reason this latter statistic is interesting is that I suspect that push sticks are used in a smaller portion of table saw operations than they are of accidents. The implication is that push sticks may well statistically increase the chance of contacting the blade. If this is in fact true, I believe it would be due to the reduced control of the work piece when push sticks are used in the typical fashion.
Hopefully that is useful information,
Steve Gass, President
SawStop, LLC"
source: Woodnet here. I'm told this link my become dead....
" George., Prior to the time we had our saws out in the field there was a lot of speculation about what would happen in actual accidents on SawStop saws. We had done a lot of tests with hot dogs, but no one really knew how fast hands hit saw blades in the real world. I had some guesses based on the physics of what happens in kickbacks and how fast material is normally fed, but no one, including me, could say with certainly how fast hands would be going and, as noted in our manual, the speed of the hand approaching the blade affects the depth of the injury.
That said, we now know the answer to this question with certainty. We have had almost 1000 reported finger saves on SawStop saws in the last 6 years. Of those accidents, around 1 in 20 requires stitches and in no case have we seen a hand approaching fast enough for the blade to amputate even a single finger. So, the answer is that unless your accident turns out to be extremely unusual, SawStop technology reacts fast enough to result in a relatively minor injury.
Interestingly and contrary to what Tommy would guess, our data shows that guards and push sticks are not sufficient to prevent accidents. In our finger save report form we ask people whether they were using their guard and whether they were using a push stick. About 70% of the reported cases of a blade contact accident, the guard (18%) or riving knife was reportedly being used. Even more strikingly, in almost 30% of the cases, a push stick was being used. The reason this latter statistic is interesting is that I suspect that push sticks are used in a smaller portion of table saw operations than they are of accidents. The implication is that push sticks may well statistically increase the chance of contacting the blade. If this is in fact true, I believe it would be due to the reduced control of the work piece when push sticks are used in the typical fashion.
Hopefully that is useful information,
Steve Gass, President
SawStop, LLC"
source: Woodnet here. I'm told this link my become dead....
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