How The SawStop Safety Feature Works - WOOD magazine 

This is one of the most creative and innovative mechanisms out there. It almost seems like sci-fi considering how well it works.

the author does like to from scratch, shaping and trimming wood from large blocks into fine finished products. ru-vid.comUgkxD-QRFQz730FJEh4f9BYSf-nkIMIC9hL_ as another reviewer mentioned, most projects require a lot of high-dollar equipment that most of us dont have the room or budget for. But, knowing how to do these things, even if we wont be able to practice the full stack project, is still great.

that is great.. won't stop the sudden slip with force from cutting your hand but it was so fast that a slip like that will probably take a few stitches instead the loss of a few fingers.. God has been good to me over the last 68 years (50 of them working with wood) I still have all my fingers and toes..

Bought this for my friend for his birthday, and he loves it. Father-in-law was a little jealous, even. :) Built solid, but light enough to move around for projects. Easy to use ru-vid.comUgkxPeGkHOMe05FySypTOvYumxMn-xi39oRe and makes great precision cuts. Doesn't come with a laser mount, but the fence is straight as an arrow and if you measure carefully, it's not a problem. Can handle dimensional lumber with ease, but of course, there's a limit to how thick. Handled a 4x4" post without a problem, but 4x6" we had to flip and cut twice. Only thing we've noticed is make sure to tighten the nut that holds the saw blade when you take it out of the box and maybe check up on it occasionally. For some, this is probably a no-brainer, but we neglected to do this and a few months in, found the motor running but the blade spinning at about half speed or less. Tightened the nut, and problem was solved. Very happy with this purchase. Dewalt makes sturdy stuff.

The video “sawstop saved my finger” popped up in my recommended and showed where he only got a little nick bc of this. I was curious bc I had never heard of it so thank you for the great explanation. I’ll have to tell my dad about this.

Genius and certainly a need for it. I hope the inventor makes tons of money

If the brake cartridge is activated due to skin contact, SawStop will replace the cartridge at no cost to you, so really the only cost to you is a new blade (and the cost of sending the cartridge to SawStop). They have the technology to determine if it was skin contact or something else, like a nail, staple, miter gauge, wet wood, etc.

I had one of these saws trigger the brake yesterday in our local makerspace shop. It was almost a non-event. I didn't touch the blade in any manner, but I was working with wet wood. There was no loud noise, and no sparks. The sound was about as loud as that here in this video, and the blade was suddenly... gone.

Super clear explanation and demo. Thanks so much for that.

I had a shop teacher missing half of his index finger. I once asked him how many years he's been teaching and he said 2 and a half while holding up 2 and a half fingers. One of my favorite teachers, can't even remember his name now

This is amazing and so clever, always wondered how this works!

So does that mean it will also be triggered if the blade encounters a nail or a staple in a piece of wood?

This is absolutely fascinating! My first time ever seeing a video related to woodworking, but I really love what I’m seeing 😊🙌📚

Great and simple explanation, I've always wondered how it works, thank you.

Thank you! Was wondering how it works. Glad i found you!

That's a great idea! 👍

Very Cool product !!!!!!!!! Thanks for showing this SawStop, Sir !!!!! Also, everybody have a Happy independence Day weekend !!!!!!!!!!!!

Fantastic explanation!

Really interesting to see exactly how the system works.

I purchased a job site saw stop about a year ago. I have sawed wet wood no problems. I have momentarily disabled the safety feature to cut wet wood and then cutting the same wet wood forgot to disable it, but it did not trip the safety device. I accidentally sawed through a metal screw in a piece of reclaimed lumber and did not know it until I examined the off cut which had 1/2 of a screw showing from the cut edge. . I am very satisfied with the ridiculous amount of money it cost.

I'm in awe... Thanks for explaining

What a unique and extremely valuable tool, cool mechanics behind how it works!

Absolutely brilliant 👏

What an amazing invention.

Great video!

I dont know much about table saws but i know a cool thing when i see one. This is awesome

Thank you.

That is incredible.

Always was confused how it worked with still running with wood but stopping with your finger

Greatest invention

thanks for great explaining everything how sawstop works! now i know how. kudos sir!

Thanks for the video, i always wondered how it worked.

Amazing!

Didn't know HOW it worked but now I do.... THANKS!!!!

This is wild!

Holy... That acted so fast it sueprised me! What a life saving device.

Oh I see! So it’s like an extreme version of the touch lamp, but instead of turning off a light, it just turns off the saw!

worth every penny

genius!

Simply genius.

Great video. If I didn't see this technology with my own eyes, I would never beleive it.

Wwoooww! Well that's Soooo Kooool!

Ahhhhh I was soooo baffled by this at first… but then I realized, if they were able to connect some type of conductive sensor to the blade, that could be it 🤔 Guess that’s exactly what it is ! …and it’s genius! The device that stays on the blade is the real star … AMAZING INVENTION 👍👍👏👏👏🤘✌️

that is so cool

I love mine!

still mind blowing how responsive is that fuse.. it seems very sensitive .. I wonder if it can be trigger by just spraying water on the blade

thats some crazy speed

A lot of people argue that the cost and potential wasted blades aren't worth the money. I'd like those same people to have a conversation with two of my coworkers who lost fingers to tablesaws, one having lasting never damage to their hand. Secondly, for people who say they can't cut PT wood (including this video), take a look at "Debunking the Sawstop Myth" by Stumpy Nubs. At the 3 minute mark he demonstrates a soaking wet piece of lumber being cut by the saw without it falsely activating. Long comment short: The extra $1500 is a PITTANCE to pay if it means saving your hand. The cost of surgery, loss of working hours and lifelong disability far exceed that one time investment. And you know what, if you practice safe feeding/cutting methods as you should, you will NEVER lose a single blade to this machine.

that is insane!

I always wondered how these things work so well

I have always wondered how this works. Very clever. Not really gonna save you if you fell and your hand slid into it at speed though.

i have always wondered how this worked, i had the idea that it could be with a current detection - but not exactly how, and i the full stop, wow. yeah that very cool!

Cool

That blade goes down soooo fast!!!

Dude just imagine you want to cut some Wood that is slightly moisturised and you dont notice it, you are now down 150$

Can you retro fit current saw with blade stop

Some of these are clearly faulty. I bought a SawStop Jobsite saw last summer. Last month, when turning off the saw, I heard a small pop. I thought nothing of it until I attempted to lower the blade before leaving the shop. It wouldn't budge. The cartridge had sprung forward and wedged up against the blade. It did not garb the blade nor did it retract the blade. Of course, it should not have fired in the first place. --I could still use the blade because of the failure but I had to buy a new cartridge and wonder whether the new cartridge would actually work when needed.

its very similar to proximity fuse on artillery shells.. the devices "senses" something by means of electrical currents (which are at speed of light), or radio waves in case of prox. shell (still, same stuff just different wavelength) amazing invention

Gracias por el vídeo andaba buscando esto pero no lo encontré en español

Amazing! See how electricity ⚡️ is part of almost everything around us even organic material!

Check out Jonathan Katz-Moses video with a super slow motion camera in case somehow you didn’t see that first

Technology in woodworking has come a long way with safety in mind very nice

Came here from the guy who showed video of him cutting his finger a tiny bit and this saw stop actually worked and saved his finger.

when you cut old wood with a nail in it will it trigger the saw stop when the blade touches the nail?

Science is awesome

How thick should MDF doors be?

These saftey tools are at another level .glad to see . However manufacturers have made them use and throw item to earn lots of money 💰

Thank you I have winder how that works forever

The fact that its soooo fuckin fast is amazing

So this guy spent $200 for us to see this. Thank you sir.

*Question for woodworking experts:* Does it matter what the material is for this to work? Or does basically anything other than wood with no electrical valance trigger it? 🤔

Thank you for wasting a blade and device to show us how it works. Appreciated. ❤

150-200. He said that like it's a lot of money but I'd say this technology is worth way more considering the price of losing a limb.

So if your wood isn't in top shape it's possible the thing can go off on your own accident even if it's not your finger touching it?

Someone just lost their finger at my work because they wouldn't install these. Forwarded this video to hr.

Damn, imagine how much it would suck if you were in a zombie movie and had to cut your arm off, but the saw had one of these… 😂

It would be interesting to see a "standard" feed rate into the blade, not some extra slow feed rate. Might cause a touch more of a "nick" at normal feed speeds.

That’s blade speed blitzing lawsuits 😂😂

Problem with this is, one it may encourage people to become more reckless or careless ie: unsafe! When using such a device. Which could one day, literally bite them. When they have to use a regular table saw without said safety device.(People will do this, not me. Ijs people will break rules. When they know, there will be Lil to no consequences for their actions. If they get "caught") The other problems with this, were already stated in this video. Wet lumber and or foreign debri in the wood. Which would at most cost you a new blade generally. Now costs you $150! (However, Imo! This is a brilliant idea and works amazingly. For its intended purpose. Where would this device be most suitable? A shop class! Or Vocational school that is teaching kids on how to use this tool safely. I would not tell them that they are safe because of the device. In I would probably remove the brand logo. That way they are being taught that the saws are dangerous and it teaches them to be safe on any saw. Vs a saw with such safety device. But if for some reason one student slips up. It won't cost them any fingers!) I truly believe that this is a great thing, I'd just like to see them figure out how to get around wet lumber activating the device. Because it'd suck to have to replace that, when it was no fault of your own and or didn't activate for your safety. I'm betting it can be done!

Who ever invented this is a genius

If it triggers every time you hit a damp spot in the wood, or the blade hits a nail I could see it getting very expensive. (I know you can't put a price on safety, but you CAN reach a point where you can't afford it)

🤯🤯🤯

He doesnt even trust the saw stopper, so he used the sausage to give an example lmao

Will this work if i have gloves?

What if you force your hand fast into the saw?

Let's give a high four to the guy who invented it

The real business case for sawstop: making people test it out to sell more cartridges and blades. Second business venture for sawstop: selling hotdogs

What if I want to cut metals

Is there a reason the system can’t just drop the blade, cut power to the motor, and activate the motor brake instead of dropping the blade while forcing a piece of metal into the blade?

Damn 200 dollars for finger insurance? That’s genuinely a sweet deal.

This has prob saved thousands of fingers

Oh it’s detecting moisture through electrical pulses carried through the blades surface, that’s how it works. Let me ask the obvious question: what if I need to rip treated sheet or lumber? Do you just turn off the safety mechanism?

Your feedspeed was way to slow. Noone starts a cut that slow but the mechanism is solid.

Cam be like:does that actually work?lets find out!

What if your not grounded tho?

From what I've seen elsewhere, the blade is not destroyed. It is damaged, but the manufacturers can fix it for less than a new blade - assuming you are using a good high quality blade. After reading some of the other comments, I am going to do some research into SawStop's legal actions. Protecting one's intellectual property is one thing, but to go so far as to prevent others from developing technology that protects us is going to far.

Meet the guy who invited this and have him a high four!

Freaking crazy.

I wonder who was the first one to try their finger?

So u can't cut treated lumber with it