GLENNSKY

I think AuroraWoodworks analysis is missing some variables. Since the action is triggered by a part of the hand that is still some distance away from the blade as it touches the guard time will elapse between the triggering event and a direct encounter with the blade. The question is, how far from the blade is a part of the hand in line with the blade when the stop is triggered and how far is that hand part likely to travel in the eitgth of a second. Plus in that time the blade will slow a lot so even if the finger gets there less damage is probable. So that is an incremental improvement for, I presume relatively little cost.

Having said all that, if the target market is on-site contractor saws, I don't see much penetration here. Are those guys safety conscious enough to buy and use this? I have my doubts. I kind of like it but I work in the basement on a cabinet saw.

Sure. Swell gizmo with high whiz-bang factor. But I don't NEED this and won't have one any time soon unless there's something I simply MUST have and can't get some other way. Runs Sketchup? Produces plans or measured drawings or cut lists? Apple products are nice but expensive and have relatively low market share. Don't prepare any content for me.