Live data from Hacker News

CT Scans of New vs. Used SawStop

lumafield.com

51–60 of 206 posts

Re: CT Scans of New vs. Used SawStop

#51
post #33
post #12

Earlier quoted context omitted.

AFAIK all sawstop catridges are one time use only and also destroys the disk. This is not really a bug.

Yeah, reliably stopping a heavy very fast spinning object in just a few degrees of rotation is necessarily violent.

The blade doesn't have to stop. Some saws have the entire blade assembly lower. If you walk the table saws at AWFS you'll see all types of different safety systems.

Re: CT Scans of New vs. Used SawStop

#52

Mostly unrelated, but I don't think SawStop is releasing its patent anytime soon like the article states. That SawStop press release was the CEO saying they would do so if the CPSC rule was passed, but the rule wasn't voted on. And even then they were only releasing one of their hundreds of patents.

It says that at the end of the article. > Despite previous litigation against would-be imitators of their safety brake, SawStop has committed to dedicating its original patent to the public when these new regulations go into effect.

My comment is pointing out that the regulations will never go into effect.

The scheduled vote on the regulations was postponed this year, and it seems unlikely it would pass once it becomes Republican majority next year.

Re: CT Scans of New vs. Used SawStop

#53

Mostly unrelated, but I don't think SawStop is releasing its patent anytime soon like the article states. That SawStop press release was the CEO saying they would do so if the CPSC rule was passed, but the rule wasn't voted on. And even then they were only releasing one of their hundreds of patents.

They've pretty explicitly been willing to release all of the relevant patents. The truth is it was always a red herring for their competitors. The major players all have systems that don't rely on these patents. Lawsuit discovery showed all of them had developed their own technology that was fine, patent wise. But it would have eaten into their profit. Personally, I have an altendorf handguard sliding table saw, whic…

That table saw looks very nice, but also $7,000? That's not the same market that people are talking about.

I'm not so sure if other companies have the ability at a sub $2000 price point! Bosch came out with their own system that they thought was different. The product was on shelves for a year and then SawStop successfully sued. If a major company like that is unable to do it even after their lawyers gave them the clearance, I'm a bit dubious it's that easy.

Re: CT Scans of New vs. Used SawStop

#54
post #22

I would be glad to see better table saw safety mechanisms, though I'm skeptical that 1. This will actually happen 2. That patent is the only one that will wind up mattering. I can't help but wonder if a big part of the reason the number of incidents is so high is because we're intentionally hyperbolic about risks when it comes to warning labels, for liability reasons. As an example, many appliances will warn that you…

> I can't help but wonder if a big part of the reason the number of incidents is so high is because we're intentionally hyperbolic about risks

I've work in multiple production furniture shops and that has not been my experience. People are just moving fast, trying to get stuff done and things happen. Also, training safety in a non-educational setting is tough.

Re: CT Scans of New vs. Used SawStop

#55
post #34
post #22

I would be glad to see better table saw safety mechanisms, though I'm skeptical that 1. This will actually happen 2. That patent is the only one that will wind up mattering. I can't help but wonder if a big part of the reason the number of incidents is so high is because we're intentionally hyperbolic about risks when it comes to warning labels, for liability reasons. As an example, many appliances will warn that you…

My grandfather is 90, he was a woodworker, he lost two fingers to a table saw. Few woodworkers of his age have 10 fingers. Workshops are much safer today and woodworkers can expect to end their career with all their fingers. That SawStop thing is one of the many things that can contribute to it. The idea that safety features cause complacency has been debunked several times. Statistically, well designed safety featur…

> The blade guard helps too, but AFAIK, there are many instances where you can't use it.

Blade guards are rarely used in shops I've worked in. I've even worked in a shop that removed the riving knifes on their saws as they got in the way of certain cuts and they didn't want to spend time taking them on and off.

Re: CT Scans of New vs. Used SawStop

#56
post #54
post #22

I would be glad to see better table saw safety mechanisms, though I'm skeptical that 1. This will actually happen 2. That patent is the only one that will wind up mattering. I can't help but wonder if a big part of the reason the number of incidents is so high is because we're intentionally hyperbolic about risks when it comes to warning labels, for liability reasons. As an example, many appliances will warn that you…

> I can't help but wonder if a big part of the reason the number of incidents is so high is because we're intentionally hyperbolic about risks I've work in multiple production furniture shops and that has not been my experience. People are just moving fast, trying to get stuff done and things happen. Also, training safety in a non-educational setting is tough.

Yeah, see, I actually just simply don't know what the breakdown of the 30,000 incidents per year is. I would've guessed a large number of those incidents were from hobbyists and not professionals, and I would guess that the mistakes hobbyists make are different in origin from the mistakes professionals make, even if they have common threads. If it so happens that it's actually mostly professionals losing fingers, then I'm barking up the wrong tree with this.

Re: CT Scans of New vs. Used SawStop

#57

Mostly unrelated, but I don't think SawStop is releasing its patent anytime soon like the article states. That SawStop press release was the CEO saying they would do so if the CPSC rule was passed, but the rule wasn't voted on. And even then they were only releasing one of their hundreds of patents.

They've pretty explicitly been willing to release all of the relevant patents. The truth is it was always a red herring for their competitors. The major players all have systems that don't rely on these patents. Lawsuit discovery showed all of them had developed their own technology that was fine, patent wise. But it would have eaten into their profit. Personally, I have an altendorf handguard sliding table saw, whic…

Damn. I’ve wanted one of those for years. What model and what did it set you back?

Re: CT Scans of New vs. Used SawStop

#58
post #55
post #34

Earlier quoted context omitted.

My grandfather is 90, he was a woodworker, he lost two fingers to a table saw. Few woodworkers of his age have 10 fingers. Workshops are much safer today and woodworkers can expect to end their career with all their fingers. That SawStop thing is one of the many things that can contribute to it. The idea that safety features cause complacency has been debunked several times. Statistically, well designed safety featur…

> The blade guard helps too, but AFAIK, there are many instances where you can't use it. Blade guards are rarely used in shops I've worked in. I've even worked in a shop that removed the riving knifes on their saws as they got in the way of certain cuts and they didn't want to spend time taking them on and off.

What sort of cuts would cause you to need to remove the riving knife?

Re: CT Scans of New vs. Used SawStop

#59
post #37
post #28

Earlier quoted context omitted.

Yes, they did. They even tried to legislate against SawStop. See "H.R. 8181: Preserving Woodworking Traditions and Blocking Government-Mandated Monopolies Act"[1] Didn't go anywhere. There is supposedly woodworker opposition.[2] "Many woodworkers argue that the implementation of SawStop technology has disrupted traditional woodworking practices. Some feel that it has altered the craft in a negative way by making it l…

> "Many woodworkers argue that the implementation of SawStop technology has disrupted traditional woodworking practices. Some feel that it has altered the craft in a negative way by making it less reliant on skill and attentiveness, instead placing an emphasis on technology to prevent accidents. This shift in focus is seen as a departure from the fundamental principles and values of woodworking." Wow. This is basical…

Ideologically speaking, it's the same sort of people that opposed seat belt laws in the 1980s on the grounds that they'd encourage risky behavior by drivers. (They don't.)

Re: CT Scans of New vs. Used SawStop

#60
post #7

Earlier quoted context omitted.

The saw manufacturers all blew off SawStop because they were worried that they would now be liable for any injuries which still occurred. Simply make table saw manufacturers liable for any injury from the saw and this kind of mechanism will instantly become default.

That’s terrible though. You can’t make knife manufacturers responsible for everything a knife does.

The difference between the accidental damage a knife can do versus what a circular saw can do is night and day. And I say this as someone who needed surgery after cutting through a tendon with a knife. :(

Old school radial saws, for example, basically don't exist anymore at the consumer level. They were simply too dangerous. Slider-type miter saws have almost completely replaced them.

Personally, I would even go so far as to suggest that weekend woodworkers should avoid even having a table saw, period.

The main problem with table saws is that they become a "do all" machine even for those kinds of actions that really shouldn't be done on it. You're already at the table saw, and it's often really convenient to just "sorta kinda" bodge something up on the table saw rather than doing the safe thing and changing the blade, putting together a real jig or using a completely different tool.

If you have a track saw or a cheap CNC instead, the danger level is way, way lower, and the result is probably a lot better.

Post reply on HN