How does this work???

[McRat]

http://www.sawstop.com/support/videos.php?watch=http://www.sawstop.com/video/Hot_Dog_Demo.flv

I didn't read the site, but the video is amazing. I'd guess a capacitive sensor that is hooked to the blade?

 

[McRat]

I couldn't help it, I read the instructions. I guess I lose my man-card.

Yes, electric signal does it, but every time it's activated, it cost you $69 to reset. It would be incredible as long as it never mis-fires. If it misfires on wet wood, or when you hit a hidden nail or staple, then it would suck.

 

[x MadMAX DIESEL]

I've seen that before, It's really amazing how fast the blade drops

 

[farky]

mcrat. remember that epic fail post you made awhile ago? i dont think the kid actually got his fingers in the street bike chain. i think he was the guinea pig in the testing stages of this device

 

[2500HeavyDuty]

it ruins the insides real bad though when its triggered it has to be rebuilt, anything moist can set it off too like damp wood. But it is alot better than losing a finger that's for sure

[YOUTUBE]esnQwVZOrUU[/YOUTUBE]

 

[jraymer]

I couldn't help it, I read the instructions. I guess I lose my man-card.

Yes, electric signal does it, but every time it's activated, it cost you $69 to reset. It would be incredible as long as it never mis-fires. If it misfires on wet wood, or when you hit a hidden nail or staple, then it would suck.

I was thinking the same thing, seems expensive. Just get one of these and keep your fingers away from the blade.

 

[jraymer]

mcrat. remember that epic fail post you made awhile ago? i dont think the kid actually got his fingers in the street bike chain. i think he was the guinea pig in the testing stages of this device

Thinking of that still makes me cringe.

 

[whitetrash21]

I was thinking the same thing, seems expensive. Just get one of these and keep your fingers away from the blade.

2x4 works tooo.....

 

[x MadMAX DIESEL]

I was thinking the same thing, seems expensive. Just get one of these and keep your fingers away from the blade.

Thats the same table saw brand too lol

 

[McRat]

2x4 works tooo.....

Yeah, that always worked for me.

I was also puzzled by "Finger Save" pictures. Most of them were middle fingers?? I can understand hacking off your thumb or pinky, but the only way I can think of hacking your bird finger is if you were pissed off at the blade or something.

Pricing at $2000, $3000, $4000 does make using a 2x4 pretty attractive.

 

[JD Dave]

Thinking of that still makes me cringe.

Me too!

 

[minisub]

Yeah, that always worked for me.

I was also puzzled by "Finger Save" pictures. Most of them were middle fingers?? I can understand hacking off your thumb or pinky, but the only way I can think of hacking your bird finger is if you were pissed off at the blade or something.

Pricing at $2000, $3000, $4000 does make using a 2x4 pretty attractive.

I think the real target market is production use. A lot of money gets spent by business every year on digits that go missing.....

 

[duratothemax]

it ruins the insides real bad though when its triggered it has to be rebuilt, anything moist can set it off too like damp wood. But it is alot better than losing a finger that's for sure

[YOUTUBE]esnQwVZOrUU[/YOUTUBE]

do you know this for a fact? Have you ever used one with damp wood and had it trigger? Do you know the physics behind the electrical engineering of the sawstop and how electricity/resistance works? :

The fact is.....come on guys, dont you think they tested it with all sorts of wood? I mean really.

damp wood, no matter how wet, is not going to conduct electricity the way your finger/body will. Wood doesnt have enough salinity to conduct enough electricity to trigger the device. Pure water has a HUGE HUGE amount of resistance compared to water that has a higher salinity content.

ben

 

[jraymer]

2x4 works tooo.....

Thats the same table saw brand too lol

HAHA well I was looking for a pic of a push stick cut from a chunk of plywood, thats what we made and used before

 

[McRat]

do you know this for a fact? Have you ever used one with damp wood and had it trigger? Do you know the physics behind the electrical engineering of the sawstop and how electricity/resistance works? :

The fact is.....come on guys, dont you think they tested it with all sorts of wood? I mean really.

damp wood, no matter how wet, is not going to conduct electricity the way your finger/body will. Wood doesnt have enough salinity to conduct enough electricity to trigger the device. Pure water has a HUGE HUGE amount of resistance compared to water that has a higher salinity content.

ben

It's probably based on capacitance? not resistance, like those lamps you can touch that turn on and off by human contact. Whether it misfires is going to based entirely on how well the circuit or software is designed. And they are probably going to error on the side of safety if it receives a marginal signal. I know the lamps are not 100% accurate at detection.

A misfire is a nuisance. An undetected finger is a lawsuit.

 

[Cougar281]

That's a neat system. Saw it on TimeWarp some time back.

 

[Subman]

I saw that video a while back and wondered what would be left of the saw and blade if it misfired. I have used a table saw a lot and built a couple of wooden pushers to keep the piece on the rail and my fingers out of it. I have a lot of respect for a table saw, if you use one much the first thing you do is get rid of the guard. I think a radial arm saw is even more dangerous and got rid of mine a long time ago. Fenceless table saw and a double miter 12" sliding chop saw, much better IMO.

 

[z79outlaw]

do you know this for a fact? Have you ever used one with damp wood and had it trigger? Do you know the physics behind the electrical engineering of the sawstop and how electricity/resistance works? :

The fact is.....come on guys, dont you think they tested it with all sorts of wood? I mean really.

damp wood, no matter how wet, is not going to conduct electricity the way your finger/body will. Wood doesnt have enough salinity to conduct enough electricity to trigger the device. Pure water has a HUGE HUGE amount of resistance compared to water that has a higher salinity content.

ben

How often is water 100% pure? Granted the type of wood you would be cutting would more than likely be dried and this would never pose a problem, but there are always certain circumstances where this would pose a problem, there a few ways that come to mind that could allow the wood to become conductive, enough to trip it I dont know, probably onlys the guys that've tested it could answer that, they'd know what the thresholds are. In the perfect world this would never trip unless it came in contact with flesh, but we all know this isnt a perfect world, heck in a perfect world people would just use common sense and keep there digits away from the saw blade.

 

[duratothemax]

the guards are a PITA. I do a ton of woodworking and have a lot of experience around the table saw. You cant use them when you are cutting dados, tenons, or the like.

something that should be on ALL tablesaws is a good riving knife. They are 10x more effective and purposeful than any stupid guard.

 

[KEVINL]

I an not sold I want to see the demonstration with a real finger:rofl: