Bosh table saw with finger cut detection

[ayuce]

Just see a new portable table saw. Its a Bosch having a feature called Reaxx. Similar to sawstop, it drops the blade under the table when hand contact detected but doesn't brake it. Don't know if it was already available but new to me.

http://youtu.be/nbDf2dpQVIY

edit: this one is better http://youtu.be/6xBrtiEZDTg

 

[RobinBHM]

Impressive!

I wonder how often a false trigger might happen.

 

[Rhossydd]

The false trigger issue could get expensive if you have to replace those cartridges often. I guess it would depend on the materials you're cutting.
Fascinating technology though.

 

[iNewbie]

Amazing technology. I'd still be wondering about those cables going faulty - or that cartridge not working.

I notice he didnt put his finger in there - its safe, right... :mrgreen:

 

[Random Orbital Bob]

you wouldn't really want to destructively test it would you??

 

[iNewbie]

He used a hotdog to test it - why not his finger.

 

[mouppe]

The false trigger issue could get expensive if you have to replace those cartridges often. I guess it would depend on the materials you're cutting.
Fascinating technology though.

Perhaps there is an override feature as with the sawstop for when you are cutting wet wood?

 

[n0legs]

There is an override for cutting potentially conductive materials.

 

[Rhossydd]

There is an override for cutting potentially conductive materials.

I haven't tried to find out what technology they use, but if it's reliant on conductivity it would explain why they don't demonstrate it themselves.

 

[ayuce]

My best guess detection based on either lekage current ( measures current flows through your body to earth when you touch) , or capacitive/inductive touch detection like touch butons. Both of them not an easy task if you consider blade attached to motor, lots of electrical interference. The cartige should be similar to airbags . Should check patent database for details.Pretty sure its patented .

 

[GLFaria]

He used a hotdog to test it - why not his finger.

Quite impressive. But that sausage seems to be wet, or at least moist. I wonder if it would work the same with a dry implement (say, finger...). Do you (cold) sweat a lot when operating a TS? :wink:
No way I would be persuaded to try it with my own fingers

Anyway, one potential problem I see with this kind of safety device is wether one might become careless or too confidente.

 

[Rhossydd]

Anyway, one potential problem I see with this kind of safety device is wether one might become careless or too confidente.

Dunno, it still seemed a dramatic and scary event. Add to that the cost of replacing the cartridge and time lost, plus I'm sure that whilst it wouldn't take a finger off, it'd give you a painful scratch/graze/minor cut. It might even make you more careful.

 

[GLFaria]

On the other side...
Just as a funny example, one of my in-laws bumped his car on a rough stone wall when in reverse - the "bip" alarm he was so much used to and confident of had become out of order without him noticing it...

 

[iNewbie]

He used a hotdog to test it - why not his finger.

Quite impressive. But that sausage seems to be wet, or at least moist. I wonder if it would work the same with a dry implement (say, finger...). Do you (cold) sweat a lot when operating a TS? :wink:
No way I would be persuaded to try it with my own fingers

Anyway, one potential problem I see with this kind of safety device is wether one might become careless or too confidente.

Hey, that was Brine - an electrolyte. :wink:

 

[Steve Maskery]

The technology is impressive. The fear I have is that people start to use it as a first resort, rather than a last one. If you use proper sawing techniques then your fingers should not be able to make contact with the blade.

That doesn't mean a TS cannot hurt you in other ways, of course.....

The throbbing is dying down, but I'm still leaking a bit of red stuff.