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Sawstop Injury - you should check this

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Forum topic by rwe2156 posted 02-26-2018 01:44 PM 2084 views 0 times favorited 32 replies Add to Favorites Watch
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rwe2156

2964 posts in 1505 days


02-26-2018 01:44 PM

I didn’t know this could happen.

If I owned a SS I would be a bit concerned.

-- Everything is a prototype thats why its one of a kind!!


32 replies so far

View Tennessee's profile

Tennessee

2873 posts in 2539 days


#1 posted 02-26-2018 01:56 PM

Yeah, the hot dog shows I have seen show the dog not even getting a slice in it, even though they put the side of the dog against the blade.

My best guess and speculation is that possibly the tip of his thumb had a nice callous on it, and did not have the moisture in the skin that the unit needs to see, (like a touch screen), to make it fire in time. But that is just a guess.

-- Tsunami Guitars and Custom Woodworking, Cleveland, TN

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YesHaveSome

95 posts in 283 days


#2 posted 02-26-2018 02:51 PM

He was using a blade SawStop says not to use because it can’t be stopped as quickly.

-- But where does the meat go?

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johnstoneb

2938 posts in 2197 days


#3 posted 02-26-2018 02:55 PM

The injury is minor compared to what it could have been if mechanism hadn’t fired.

-- Bruce, Boise, ID

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MinnesotaSteve

49 posts in 916 days


#4 posted 02-26-2018 03:40 PM

I believe he touched the blade with his fingernail, which is non-conductive and didn’t register until it cut into it.

Something to be mindful of, but at least he didn’t lose his finger.

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JollyGreen67

1676 posts in 2788 days


#5 posted 02-26-2018 04:17 PM

interesting – BAM ?

-- When I was a kid I wanted to be older . . . . . this CRAP is not what I expected !

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YesHaveSome

95 posts in 283 days


#6 posted 02-26-2018 04:23 PM



I believe he touched the blade with his fingernail, which is non-conductive and didn t register until it cut into it.

Something to be mindful of, but at least he didn t lose his finger.

- MinnesotaSteve

Even if it cut his fingernail first it should have stopped when it hit the skin. Again though, he was using a blade that SawStop says not to use. That blade was actually bad from two perspectives 1) it had shoulders 2) it was painted. SawStop says to only use blades without shoulders and that are bare metal.

-- But where does the meat go?

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bbasiaga

1234 posts in 2020 days


#7 posted 02-26-2018 05:03 PM

I saw this video. I could not bring myself to watch the injury part itself. That stuff grosses me out.

I believe from his description that his thumb was saved from amputation. Sounds like there was more tissue damage than usual, owing perhaps to the painted blade and the slower to stop design features of the teeth, but a save none the less.

I did some math once in one of those threads on how deep a cut could be depending on how fast youjr hand was moving and given their 5ms stop time. It was pretty small at fast feed rates. I want to say in the 32nds of an inch range. BUT, his hand was not feeding the board. He was reaching forward, and your hand in that case would be moving MUCH faster than one smoothly feeding a board through. So that would deepen the cut. Add in the slower response tikme of the pai need blade and worse still. .
So someone needs to volunteer to thbrow a hot dog at top speed in to their sawstop and see what it looks like. My tool budget is blown for the month so I will have to pass. ....

Brian

-- Part of engineering is to know when to put your calculator down and pick up your tools.

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rwe2156

2964 posts in 1505 days


#8 posted 02-26-2018 05:10 PM

That blade was actually bad from two perspectives 1) it had shoulders 2) it was painted. SawStop says to only use blades without shoulders and that are bare metal.

- YesHaveSome


It wasn’t painted besides that the manual does not say anything about painted blades.

It does say not to use blades with anti-kickback (depth limiting) shoulders, tho. That was probably the issue.

-- Everything is a prototype thats why its one of a kind!!

View Kazooman's profile

Kazooman

1028 posts in 1977 days


#9 posted 02-26-2018 05:18 PM

I was surprised at how far the blade was from the edge of the riving knife. The blade does not appear to be the diameter that is intended for the saw. I am amazed that he was apparently able to crank the brake cartridge up enough to get close enough so the sensor mechanism would allow him to start the saw. It is the momentum of the blade digging into the aluminum face of the cartridge that sends the blade below the surface of the table. The smaller diameter blade would have much less momentum than a full ten inch blade. Combine that with the anti-kickback blade and the braking mechanism was impaired. It still saved him from cutting his thumb clean off.

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BikerDad

347 posts in 3626 days


#10 posted 02-26-2018 05:39 PM

He said “1-2cm deep” in the video, but I doubt that’s the case. 1-2cm LONG. Had it been that deep, it would definitely have been into the bone, which I’m pretty sure he would have mentioned, given that he did mention the nail damage.

Looks like he dodged a bullet there, and he makes some very good points about paying attention to BOTH hands. Very glad that he didn’t suffer more injury.

-- I'm happier than a tornado in a trailer park! Grace & Peace.

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Rick

9725 posts in 3058 days


#11 posted 02-26-2018 06:07 PM

I think it was His Mistake …... BUT! $300.00 Bucks & ..... OUCH!

I also think He Was VERY Lucky He didn’t Completely lose His Thumb!!

Rick

-- LIFE is what happens when you're planning on doing Other Things!

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bonesbr549

1557 posts in 3092 days


#12 posted 02-26-2018 06:41 PM

Wow so much went wrong there, but he is honest and thanks to him for sharring. Eyes never off that blade ever!

NEVER REACH over a spinning blade! It takes two seconds to turn it off and with the paddle design you don’t even have to look away from the blade, and I’m a lefty.

GRippr’s are you friend and control both sidess. I use two of them!

Finally the average cost of an amputation is 250k and a changed life. I’d say that sawstop has paid for itself in spades!

-- Sooner or later Liberals run out of other people's money.

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pintodeluxe

5705 posts in 2838 days


#13 posted 02-26-2018 06:57 PM

I’d be more concerned if I didn’t own a Sawstop.

No safety feature is perfect, but I’ll bet in a majority of cases it helps a great deal.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

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Manitario

2630 posts in 2908 days


#14 posted 02-26-2018 07:16 PM

I’m an ER doctor and regularly see hand injuries from powertools. The type of injury I see from the mechanism he described, ie. end of thumb going into the blade, typically results in a complete shattering of the bone in the end of the thumb. Those are the ones that end up with the hand surgeon. He has a relatively minor injury, which will heal up quickly, which I think is thanks to the SS safety mechanism.

-- Sometimes the creative process requires foul language. -- Charles Neil

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Rick

9725 posts in 3058 days


#15 posted 02-27-2018 10:54 PM



I m an ER doctor and regularly see hand injuries from powertools. The type of injury I see from the mechanism he described, ie. end of thumb going into the blade, typically results in a complete shattering of the bone in the end of the thumb. Those are the ones that end up with the hand surgeon. He has a relatively minor injury, which will heal up quickly, which I think is thanks to the SS safety mechanism.

- Manitario

You’re absolutely Correct Charles! (A Fellow Ontarian I see.)

-- LIFE is what happens when you're planning on doing Other Things!

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