The Sawstop system induces an electrical signal onto the blade and then monitors that signal for changes. The human body has a relatively large inherent electrical capacitance and conductivity- if the system detects this, the blade drops out in 5 milliseconds! Check out the video when the saw comes in contact with a hotdog...
This is amazing, when I first read the digg post, I thought to myself that there was no way this could get out of the way fast enough. Then I watched the video, then I watched the video 5 more times. This is freaking amazing! As I build up my shop, I am putting this baby on my wish list. I may never be able to afford a proper table saw, nor do I have an enormous need for one (in spite of how much I want one :) but if I do, this one is the one for me.
I don't have to remind many of you about how accident prone I am, just look at old blogger-x's comments on Christmas eve and you will swiftly be reminded. While I have never removed a piece of me on a saw blade, I do have some scars from my summer as a machinist.
Anyways, this tool has been noted, and dugg.
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