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Thread: Another blade stopping tech
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16th December 2020, 07:46 PM #1GOLD MEMBER
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Another blade stopping tech
Skin Sensing Saw Technology | Saw Shield
Retro-fittable to 'most', bandsaw and tablesaw
Doesn't kill the blade, but does destroy a cartridge
Light on detail though...
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16th December 2020 07:46 PM # ADSGoogle Adsense Advertisement
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16th December 2020, 07:58 PM #2
Interesting reading, got a few other things as well.
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16th December 2020, 08:24 PM #3Taking a break
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I love the "Time Until the Next American is Injured in a Band Saw or Table Saw Accident" timer. I wonder what it would look like if they used #$%@ing riving knives and overhead guards
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16th December 2020, 09:51 PM #4GOLD MEMBER
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Im really glad they tell you how it works.... other then installation can take an hour or and plug in a few wires its tons of marketing spin
I can only assume it clamps the blade vs jamming it like a sawstop?
I also wonder what @bobl might think if their dust monitor
Revolutionary Band Saw Safety | Saw Shield
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16th December 2020, 09:59 PM #5Taking a break
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I still can't understand how the bandsaw ones can dead stop without destroying the blade...the inertia of the wheels has to go somewhere (even just the top one, assuming you could clamp directly on the bottom one) and a 1/8" bandsaw blade sure doesn't look strong enough to absorb that kind of energy.
Am I missing something?
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16th December 2020, 10:56 PM #6Member
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A mate sent me the link to this yesterday. Had a look over it and I think it seems too good to be true. Especially since they won't actually show the brake cartridge, due to supposed IP protection.
I reckon that either the whole thing is an elaborate scam or they are very much hoping that this does not infringe on a sawstop patent. When Bosch released their reaxx table saws they didn't even use a cartridge that impacted the blade, but they still infringed the patent enough for the product to be discontinued.
Even if the sensing part doesn't involve touching the blade it just seems like it won't work out well for them as far as sawstop patents go.
I also note that in the demonstrations it seems that the blade has very little "wiggle" when the product activates. Not sure if that's a good sign of anything.
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16th December 2020, 11:04 PM #7SENIOR MEMBER
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The details are pretty light but it might be that it doesn't stop the blade as suddenly as the SawStop does. This one stops the blade if you get within 6mm-25mm+ of it - that might be enough time to kill power to the blade and for the brake to stop the blade without damaging it. I can't see anywhere they give a definite time, just milliseconds for the SawShield. SawStop says their mechanism stops the blade in 5ms... and if that's enough to make a blade unusable, how much slower is the SawShield?
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17th December 2020, 12:42 AM #8
Very light on details. Too light. Too good to be true?
Regards from Perth
DerekVisit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.
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17th December 2020, 06:44 AM #9GOLD MEMBER
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Just keep your bloody fingers away from all blades🙄
it’s really not that hard.
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17th December 2020, 09:06 AM #10
Interestingly this safety technology has been available in production bandsaws used in meat processing facilities for a while, so it's certainly achievable. My understanding is that upon activation tension is released from the blade to allow the wheel to "slip", which takes most of the kinetic energy out of the picture.
See the Australian and NZ examples. BladeStop Bandsaw - Reducing bans saw operator injuries » Scott (scottautomation.com),
and The Guardian Bandsaw - YouTube
I think the Guardian system is brilliant though, as the feedback/metrics provided to a meat room really drives a safety culture and processes rather than it just being a technology fix.
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17th December 2020, 09:29 AM #11
Yes, I look at all those scaredy-cats with guards over their jointer blades, band-saw guards pulled down, table saw guards installed, crash bars on wood chippers, chain brakes on chainsaws and think to myself, they're not real men like me. Then I beat my chest and roar like the wild beast I am so that every one can stand in awe at my manliness. But when the sun has set and no-one else is around, I look in the mirror, and repeat to myself five times over, "It's a conspiracy, there is no such thing as an ACCIDENT | meaning in the Cambridge English Dictionary"
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17th December 2020, 09:35 AM #12.
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It looks like their dust detector is similar to the AUD$48 ebay specials with an added battery.
In practical terms I'd begetting the ebay special and using it with a bigger battery
It also looks like they need a decent OH guard.
One thing for sure, I doubt its going to last too long if it is left on a table saw table while cutting without OH bad dust collection.
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17th December 2020, 09:44 AM #13GOLD MEMBER
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wonder if its not an aluminium cartridge, maybe a larger plastic one, firm enough to stop the blade but not enough to damage it.
guess we will just have to wait and see.
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17th December 2020, 10:08 AM #14Taking a break
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Obviously bad strawman is obvious and bad
Guards are there to keep your hands away from the blade
How many so-called "accidents" that are caused by:
- Operators not using/bypassing standard safety equipment
- Operators using poor/incorrect/inherently dangerous technique
- Operators not paying attention
The key word in all these scenarios is operator
Remove those from the tally and you're getting closer to the number of real accidents that couldn't reasonably be predicted or prevented. I'll bet that number is pretty low.
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17th December 2020, 10:58 AM #15
That's the point I was trying to make. I was responding to the implication that only idiots would get their fingers anywhere near a blade, in which case why bother with a guard at all. It is precisely such an attitude of one's infallibility that leads to ...
Unfortunately as operators we are never immune to accidents, and so I struggle to understand why some deride the availability of additional safety products and measures on the market.
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