Sawstop revisted and could this be implemented on a chainsaw?

[Rubycon]

For those not in "the know"

http://www.youtube.com/watch?v=OMD3agP5hv0

Do they have something similar for chainsaws? Something that works automatically like the sawstop?

 

[rivan]

I'd imagine it'd be difficult to implement reliably on a chainsaw, since the materials being cut are wildly varied in terms of their capacitance (someone will almost certainly correct my terminology). I think it works on a table saw on the premise that you probably won't be cutting anything even marginally wet.

 

[Rubycon]

Too bad the device is a one shot.
It would be interesting to try with other objects of varying moisture content.

 

[Vette73]

Another thing is the added weight. On a table saw not a big deal but for a saw you carry around it would IMO make it more unsafe.

 

[GuitarDaddy]

I'd imagine it'd be difficult to implement reliably on a chainsaw, since the materials being cut are wildly varied in terms of their capacitance (someone will almost certainly correct my terminology). I think it works on a table saw on the premise that you probably won't be cutting anything even marginally wet.

Waaa? Doesn't everyone use their table saw to slice bulk beef?

Although it it kind of hard setting up the rip fence for thin sandwich slices

 

[destrekor]

Too bad the device is a one shot.
It would be interesting to try with other objects of varying moisture content.

If I remember right, with the sawstop the only parts that need replaced is the blade and the stop mechanism - and again, iirc, that has a replacement cost less than the entire device.

 

[Viper GTS]

If I remember right, with the sawstop the only parts that need replaced is the blade and the stop mechanism - and again, iirc, that has a replacement cost less than the entire device.

It's still $100+ every time you do it (I don't know the exact price). Experimentation would get expensive really quick.

Viper GTS

 

[Rubycon]

If I remember right, with the sawstop the only parts that need replaced is the blade and the stop mechanism - and again, iirc, that has a replacement cost less than the entire device.

Yes but outside a test facility an end user isn't going to be testing. It's like running your car into something to test the airbags. :biggrin:

If it's $60 that's a small cost compared to getting injured. Accidents happen all the time. (although this would not prevent kickbacks and injury from trapped arrow launches, etc.)

The guy that put his finger in there was crazy. I don't think I would do it and even if I did I would not do it again. It's not like touching a photoflash capacitor where you really build up and afterward you realize it's not bad. Doing it again (and again) is much easier. With this thing it's like petting a shark (but I've done that too!). Any blade that close is scary.

 

[Vette73]

If I remember right, with the sawstop the only parts that need replaced is the blade and the stop mechanism - and again, iirc, that has a replacement cost less than the entire device.

Around $60 plus the blade (good blade can be $30-100+). Not taking into account a sawstop table saw is not cheap to begin with.

That and you have to stop working till you replace the module and blade. Then check to make sure it did not throw off the machine if so then you have to reset it as well. Thats can be a good days worth of work.

 

[drnickriviera]

For those not in "the know"

http://www.youtube.com/watch?v=OMD3agP5hv0

Do they have something similar for chainsaws? Something that works automatically like the sawstop?

Have you seen the chaps you can wear when using a chainsaw?

http://www.youtube.com/watch?v=52N9YPfFkcw

I think they also make special boots too.

I've heard the saw stops can be triggered by wet treated lumber. If that's the case, there's no way it will work on a tree

 

[Rubycon]

Yes chaps and STEEL toe boots should be standard.

 

[rivan]

We need to take people out of the equation entirely, make autonomous tree-climbing-snake-chainsaw-robots and call it a day.

 

[Rubycon]

Like noodles?

http://www.youtube.com/watch?v=bfLGz1KBD6k&

:biggrin:

We need to take people out of the equation entirely, make autonomous tree-climbing-snake-chainsaw-robots and call it a day.

 

[Numenorean]

Too bad the device is a one shot.
It would be interesting to try with other objects of varying moisture content.

The cost is low for replacement of the blade and stop mechanism vs. either the hospital bill that you would incur, the loss of digits that may not be able to be reattached, or a worse accident that somehow kills you, as well as much cheaper to the employer if used in a business. I am sure that insurance premiums would be reduced because of the device, etc.

 

[alkemyst]

In all fairness if you find you have triggered a sawstop, chances are you wouldn't be working that day anyway.

 

[rivan]

Like noodles?

http://www.youtube.com/watch?v=bfLGz1KBD6k&

:biggrin:

Ooh, 50" bar! Looks like an upgrade for chainsaw-robot-overlord v2!

 

[sciencewhiz]

While a chainsaw won't have the rotational energy of a table saw, I'm still not sure I'd want to be holding it when the chain stops.

 

[vi edit]

How many significant injuries happen a year with chainsaws vs. table saws anyway? As a "casual" user of both tools the table saw scares the ever loving crap out of me and I avoid using it all costs if I can. I just don't like using that thing.

Chainsaws on the other hand don't really both me at all.

 

[Numenorean]

How many significant injuries happen a year with chainsaws vs. table saws anyway? As a "casual" user of both tools the table saw scares the ever loving crap out of me and I avoid using it all costs if I can. I just don't like using that thing.

Chainsaws on the other hand don't really both me at all.

Table saws are just fine if you are careful. They make push blocks and featherboards and such for a reason.

Any saw can be dangerous. Like the circular saw a guy used to cut a board he held on his knee to hold and ended up cutting into his leg.

 

[Vette73]

How many significant injuries happen a year with chainsaws vs. table saws anyway? As a "casual" user of both tools the table saw scares the ever loving crap out of me and I avoid using it all costs if I can. I just don't like using that thing.

Chainsaws on the other hand don't really both me at all.

Chainsaws for most homeowners use a anti-kickback chain, not what the pros use. So that has helped a lot.

Table saws are not as bad if you use the guard (most don't) and actually use a table saw for what it is supposed to be used for.

 

[rivan]

Table saws are just fine if you are careful. They make push blocks and featherboards and such for a reason.

Any saw can be dangerous. Like the circular saw a guy used to cut a board he held on his knee to hold and ended up cutting into his leg.

I can't tell you how many times I've seen people do that (cut like that, not cut themselves). Boggles me each and every damned time.

 

[vi edit]

Still with a table saw you can run into problems with the blade binding and kickbacks. Yes I know that those can be mitigated as well, but it's still a risk.

I respect any power tool I use, hell I know guys that have shattered their wrists with a drill that bound up. But of all the tools in my garage I really hate the table saw and would consider saving up for a sawstop product because of that.

 

[Blackjack200]

I know, on an intellectual level, that the table saw is one of the most dangerous tools in the shop, but I've always been very comfortable with it.

The sawstop sounds like it could be a good idea. It would probably only take one false alarm for me to get rid of it or bypass it though. Also doesn't seem like something that could ever work on a hand held tool.

As an anecdotal aside, of all the contractors I've known, none have hurt themselves on a table saw. They have, on the other hand, hurt themselves with joiners, radial arm saws, and nail guns. I actually was an indirect victim of a table saw that snagged on a small ripping and threw it at me. 5 stitches to close the wound IIRC.

 

[alkemyst]

I was learning about the table saw when I was really young. My dad was ripping a board through, next thing I remember is a loud bang happened behind us...a huge splinter of wood tore out and shot about 4-5' behind him, through a hollow wood door and through one side of drywall in a joining wall.

Chainsaws are one of the more popular ER trips here during hurricane season. Most homeowners are saved by buying saws a bit underkill for their needs, having them equipped with anti-kickback chains and bars as well as cutting pretty puny stuff compared to real-uses.

A full bore chainsaw can kickback and split open your head before you even know what happened if you are not experienced.

 

[BoberFett]

While a chainsaw won't have the rotational energy of a table saw, I'm still not sure I'd want to be holding it when the chain stops.

That was my first thought. That thing is going to go flying in some direction when that chain stops.