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Sawstop brake misfired on Dado Blade

12K views 67 replies 34 participants last post by  S0i7  
#1 ·
Hi LJ,

I was just using my Sawstop PCS 3HP to cut on some tenons on some cherry using a dado blade. I had made over a dozen cuts by this point with the current dado blade/brake setup when all of a sudden heard a loud bang. I jumped. Them realized the brake had fired. Honestly, cannot figure out why. I took about a dozen pictures from every angle thinking perhaps my miter gauge had touched the blade, but NO. Checked out the piece of wood for signs of metal nothing. The piece of wood was kiln dried so should have had a low moisture content plus had already made dozens of cuts using wood from the same board with no problems.

Has anyone else had this issue? Have you had any luck contacting SawStop? Will they replace the brake and blade?
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#32 ·
No blade, maybe a brake cartridge, MAYBE. I had 3 go in less than 24 hrs. 3 Forrest WW 2 blades. Go price them. All happened in first minute of use The 3rd event occurred less than 5 seconds after start up. Nothing on saw, not touching with any part of my body. Not cutting wood, just spinning in the air. Sent 3 brakes in for testing at my expense. 3 weeks later was told testing indicated an electrical trigger. Meanwhile I completely disassembled the 3 hp pcs and took lots of photos which I sent to SS tech. I had to replace the impact bar where the arbor hits when it drops the blade below the table. I tested wiring and determined some current leakage in the cable which connected the switch to the brake module. The power cable has a grommeted hole it goes through to the switch, but the other cable goes through a tight hole without a grommet. I found a post about this cable being pinched and damaged on someone else's saw so I ordered a new cable and other replacement parts at my expense. SS gave me a brake for my troubles, but only one and admitted no fault. I think I paid the shipping. My saw was down for over 6 weeks and I called or emailed the SS tech every other weekday to keep the pressure on which didn't seem to work. In the meantime I bought a 3hp Laguna Fusion 3 to get me moving. I use both now. Cut quality is the same. Dust collection is a bit better with the SS. BIG difference in price. The USA Laguna folks were great to work with and had my saw shipped from their nearest warehouse to my local vendor within days. The Laguna miter fence is very nice and much better than the SS. Fit and finish is good and rip fence is nice, BUT you can not place the fence to the left of the blade due to the convertible high/low fence. That has not been a problem for me
Advice: send cartridge to SS, send blades to quality sharpening service to sew if they can repair or just buy a new dado set. Go buy a brake because you may not get one soon, if at all. Good luck
Jim
 
#3 ·
+1 Contact Sawstop.

You send the brake to them at your cost if you want it checked. They hook it up to a computer and check data.
The data can show the difference between metal, wet wood, hot dog, and/or human flesh triggers. If is was nuisance trip, you get a replacement brake returned to you. If not, tough luck.

Another reason to call: Sawstop recalled a small batch of randomly failing brakes several years ago. Have your brake in hand to give them serial number details when you call.

Best Luck.
 
#6 ·
Update: I did call SawStop. Didn’t get any promise of a new blade or a new brake cartridge. The technician I spoke with said they only send out new cartridges in the event of a finger strike which this wasn’t. He did say I could send them the brake cartridge at my expense and they would download the data. He also mentioned that I could try and see if I could replicate what happened in bypass mode. The saw would indicate a brake activation code even though it would not actually trigger the brake. I have been trying (in bypass mode) and regular mode with a regular blade and brake but no results.

For the dado stack I was using I am wondering if it’s actually ruined. After pulling the brake off the blade, the blades and chippers seem to be in remarkably good condition. Haven’t tried cutting with it. Looking at the price of replacement components though ot looks like I may as well buy a new dado set. Price wise it would be almost the same once taxes and shipping are factored in.
 
#11 ·
Well, look...nuisance trips seem to be a minor thing at this point, you don't see too many (I realize this is all relative). Besides it might not have been the saw, ti might be the brake that was faulty or even some undiscovered thing you overlooked.More common are accidental trips, where someone runs their miter gauge into the blade or some such happenstance.
 
#18 ·
I had a defective cartridge out of the box, didn't loose a blade since it did not work. Sent it back to Sawstop and was shipped a new one fairly quick. The issue with the sawstop and fingers, I have had 3 friends that sure wish they had one. Two were professionals and just made one mistake. Dan
 
#20 ·
Another update:
Just got a response from SawStop. Here is the email they sent me:


CASE ID: 112-175066
Thank you for contacting SawStop Technical Service. We sincerely appreciate your business.
We received the brake cartridge you sent in for evaluation. After analyzing the data from the brake cartridge, we determined the brake activation was most likely due to electrical noise. We are shipping you a replacement brake cartridge free of charge with updated firmware.
 
#22 ·
Never heard of electrical noise with one of them but glad they replaced it. I’m sure the inconvenience and some additional costs are annoying but the first time you aren’t paying attention and you accidentally touch the blade and it operates you’ll be glad you have it.
My truck doesn’t drive itself either but I do have air bags in it!
 
#26 ·
It seems to me, that while the SS is a much safer saw than the rest, that safety comes at a price, or I guess a few prices. The premium purchase price is well kown but SS table saws appear to be a very well built premium tool and for that reason they might be priced fairly. However, I've worked with a SS cabinet saw in my buddies shop for more than a few hours. I don't like the way the zero clearance is open in the back to allow the riving knife. In my work I make a lot of small pieces and I have lost a few down that hole. Also by some reports it seems to me there are a fair amount of misfires for various reasons and they cost $$ as well. Finally my friends sliding table attachment has never been very good, he's now using a Dubby Cross cut saw instead. All in all If I needed a new table saw I din't think the SS would make the final cut. Pun intended.
 
#36 ·
I solved the issue of small pieces falling through the back of the insert by switching it with a dado insert. Once you cut through the insert use a jigsaw to extend the cut so the riving knife fits through without interference. I have one for 90-degree and 45-degree cuts.
 
#27 ·
Hi LJ,

I was just using my Sawstop PCS 3HP to cut on some tenons on some cherry using a dado blade. I had made over a dozen cuts by this point with the current dado blade/brake setup when all of a sudden heard a loud bang. I jumped. Them realized the brake had fired. Honestly, cannot figure out why. I took about a dozen pictures from every angle thinking perhaps my miter gauge had touched the blade, but NO. Checked out the piece of wood for signs of metal nothing. The piece of wood was kiln dried so should have had a low moisture content plus had already made dozens of cuts using wood from the same board with no problems.

Has anyone else had this issue? Have you had any luck contacting SawStop? Will they replace the brake and blade? View attachment 3856475
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Update: I did call SawStop. Didn’t get any promise of a new blade or a new brake cartridge. The technician I spoke with said they only send out new cartridges in the event of a finger strike which this wasn’t. He did say I could send them the brake cartridge at my expense and they would download the data. He also mentioned that I could try and see if I could replicate what happened in bypass mode. The saw would indicate a brake activation code even though it would not actually trigger the brake. I have been trying (in bypass mode) and regular mode with a regular blade and brake but no results.

For the dado stack I was using I am wondering if it’s actually ruined. After pulling the brake off the blade, the blades and chippers seem to be in remarkably good condition. Haven’t tried cutting with it. Looking at the price of replacement components though ot looks like I may as well buy a new dado set. Price wise it would be almost the same once taxes and shipping are factored in.

Update 2:

After receiving the new Dado brake free from SawStop I contacted them again to ask if they would be willing to give me a free or discount on a new dado stack. I was not expecting a new replacement honestly but doesn’t hurt to ask. To my surprise they sent me a brand new SawStop brand dado set free of charge! I have to say I am beyond impressed with the customer service at SawStop.
 
#39 ·
Last month I had a brake trip while changing from a dado setup to 10" blade.. could not get the saw to start. The flashing light patterns said side door was open. Shut the side door. tried to start saw, nothing doing. Took brake out and carefully reinstalled. Tried again to start saw. Did not start. I touched the blade and heard a small pop and saw a spark from the blade to the brake.

So installed new blade and brake and saw ran fine.

Called SS and told him my story. Sent the brake back to SS. They replied that the brake was defective and was sending me a new brake. Glad the blade was a reasonably priced Diablo not a Forest.