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Help with SawStop blade/brake adjustment

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Forum topic by Sarit posted 11-07-2017 05:44 AM 486 views 0 times favorited 15 replies Add to Favorites Watch
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Sarit

549 posts in 2955 days


11-07-2017 05:44 AM

Topic tags/keywords: sawstop tablesaw

I’ve been with SawStop support technicians twice today to help me resolve why I cannot widen the gap enough for my dado blade and dado cartridge when I only need about a 1/64” more travel than for my 10” blade setup. I’m hoping someone on the forum might have an answer.

What happens is the bracket that holds the brake cartridge seems to hit maximum travel a bit short of what the max travel should be. If you see in the photo below, there’s a rivet in the middle that is in an L shaped slot in the bracket. Contrary to what support told me, that rivet and slot determines the absolute maximum travel of the bracket. In addition, SawStop uses a locknut at the end of the yellow adjustment bolt to artificially limit the travel so users don’t set the gap accidentally too far away. The first technician sent me info on how to set that locknut despite me telling him that I had already backed it way back so that it was no longer the limiting factor.

Here is a closeup of the rivet and slot:

Now what’s interesting is that when I completely removed the yellow bolt the bracket is able to reach max travel as seen here:

But to reinstall the bolt I have to push the bracket back up as I screw in the bolt in order for the threads to engage with the threads in the bracket. With the threads engaged the bracket can only open up to the point I showed in the first pic. Since the bracket swings in an arc (albeit a tiny one) and the bolt threads in a linear direction, then the shaft of the bolt needs to have some play for the bracket to be able to move through its full range of motion. In my case there’s not enough play so the bracket is unable to change it’s angle beyond the point where the bolt sides start hitting the sides of the bolt shaft.

I’m debating whether I should try to grind down the diameter of the non threaded portion of the bolt to provide the play necessary. Here’s the bolt: disregard the permanent marker marks I wanted to see where it was rubbing in the shaft.


15 replies so far

View Fred Hargis's profile

Fred Hargis

4717 posts in 2308 days


#1 posted 11-07-2017 11:44 AM

I have no input on your approach, but I do wonder what dado set you’re using? I’ve used 2 different sets on mine and have no run into that problem. One of them was new, so it was at the maximum diameter. The second has been resharpened 3 times so I’m sure it’s a little smaller diameter. I’m pretty sure before I tried what you want to do, I’d get a replacement bolt first, just in case things don’t work out.

-- Our village hasn't lost it's idiot, he was elected to congress.

View Manitario's profile

Manitario

2536 posts in 2698 days


#2 posted 11-07-2017 01:06 PM

I agree with what Fred said, it seems really strange that a standard dado set wouldn’t fit, or that it would fit but only with the 1/64” to spare. Mine fits easily with prob 1/16 of room that I can crank the cartridge clearance either way.

I wouldn’t start modifying anything on the saw; their CS is great and will work with you until you have some sort of solution. If you start grinding bolts and/or making modifications without their direction, I imagine that the CS will be less inclined to help you, also if something goes wrong in the future, they can always blame it on the modifications you made.

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

View Redoak49's profile

Redoak49

2853 posts in 1804 days


#3 posted 11-07-2017 01:11 PM

Me too…...I use a Freud dado on my Sawstop PCS with no problems. I would not modify the saw as it will void warranty.

View Sarit's profile

Sarit

549 posts in 2955 days


#4 posted 11-07-2017 02:24 PM

I have the premium freud dado set w/ the 4 tooth chippers. The adjustment needed is only about 1 mm from where I had it for the freud fusion so it’s definitely not the blade that’s the issue.

My saw is already beyond the warranty period and the reason I was considering modifying the bolt is that I can replace the bolt for like $2 at SawStop.
I’ll give CS another shot before modifying anything, hopefully the next person I talk to will believe what I’m saying.

View Markmh1's profile

Markmh1

61 posts in 259 days


#5 posted 11-07-2017 02:32 PM

Just an idea, have you measured the diameter of the dado set? Could Sawstop CS give you an idea what specs for a dado set are?

I see where you are running into trouble with the saw. You may end up measuring hole locations. EVERY manufacturer will ship an out of spec part now and then. Sawstop CS should be all over this with print dimensions available to you.
I know Sawstop QC is not your problem, but you are over a barrel.

I wish you the best of luck.

Mark

It does look like elongating the bracket hole would solve the evil. A little Dremel action is the fix. This would really screw up your warranty. It would also remove Sawstop’s liability if there was an accident. You almost need to find why things aren’t lining up.

View Manitario's profile

Manitario

2536 posts in 2698 days


#6 posted 11-07-2017 02:51 PM



Just an idea, have you measured the diameter of the dado set? Could Sawstop CS give you an idea what specs for a dado set are?

- Markmh1

That’s a good idea; I have a Freud glueline rip blade that is almost 1/8” smaller than my Freud Premier fusion; Freud says that that is within their manufacturing tolerance. Probably wouldn’t have even noticed if I didn’t check the clearance on my SS.

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

View Sarit's profile

Sarit

549 posts in 2955 days


#7 posted 11-07-2017 03:43 PM

Just got off the phone w/ support, they are sending me a new bolt to see if that works. Should be here by Thursday. Will keep everyone posted.

View Fred Hargis's profile

Fred Hargis

4717 posts in 2308 days


#8 posted 11-07-2017 04:11 PM

Please do keep us up on it. It will be interesting to hear the resolution.

-- Our village hasn't lost it's idiot, he was elected to congress.

View pintodeluxe's profile

pintodeluxe

5422 posts in 2628 days


#9 posted 11-07-2017 04:16 PM

Is there any chance the dado cartridge is out of spec?

What does the O.D. of the dado set measure? I have a dadonator set that measures right at 8”, but some Freud sets are smaller.

Is this the first time you’re installing this dado blade on this particular saw? Or have you used this setup many times, and all of a sudden you have no clearance?

Has the saw ever triggered?

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

View tmasondarnell's profile

tmasondarnell

62 posts in 1605 days


#10 posted 11-07-2017 05:30 PM


Is there any chance the dado cartridge is out of spec?

What does the O.D. of the dado set measure? I have a dadonator set that measures right at 8”, but some Freud sets are smaller.

Is this the first time you re installing this dado blade on this particular saw? Or have you used this setup many times, and all of a sudden you have no clearance?

Has the saw ever triggered?

- pintodeluxe

+1.

I would question the dado stack cartridge.

It has been awhile since I installed my Freud 8 dado stack and dado cartridge on my Sawstop, but if I remember correctly, I had to adjust the dado cartridge closer to the stack (not farther away) to get the correct gap.

Of course I have slept since then, so I might be wrong.

View Sarit's profile

Sarit

549 posts in 2955 days


#11 posted 11-10-2017 04:44 AM

Okay, I got the replacement bolt today and guess what, the new bolt is even thicker. So thick in fact that it doesn’t even fit in the hole. My calipers measure about 0.010” thicker. I think I’ll go ahead and try grinding down the diameter of the shoulder on the new bolt. It’s not really a useful bolt at that thickness anyways.

I think I might have confused some of the responders. I’m not considering elongating the slot in the bracket, but rather I need to increase the space around the shoulder (non-threaded portion) of the yellow bolt and the bolt hole that the bolt drops into. The slot in the bracket is fine.

I’ve used the dado set before in the saw without the blade tripping but I don’t remember if I tried to increase the gap and couldn’t and therefore just gave it a shot or if I did manage to set the gap correctly. That was a couple years ago (I tend to use routers or multiple passes over TS with a regular blade as that is usually faster).

The dado cartridge could be out of spec but I have no idea how/where to measure.

Let’s see if SS is open on Veterans Day.

View Carloz's profile

Carloz

873 posts in 407 days


#12 posted 11-10-2017 11:59 AM



I have the premium freud dado set w/ the 4 tooth chippers. The adjustment needed is only about 1 mm from where I had it for the freud fusion so it’s definitely not the blade that’s the issue.

- Sarit


Normally people prefer measuring things with a caliper rather than comparing them to other objects of unknown size. Your Freud Fusion already could be oversized. And 1mm is actually a lot.

View Sarit's profile

Sarit

549 posts in 2955 days


#13 posted 11-10-2017 05:45 PM

This is a snippet if the knowledge base article the SS CS gave me:

The design is meant to accept dados at least 1/8” oversized. So unless my freud fusion and my freud rip blades are both oversized, I don’t think the dado is beyond the SS spec.

View Sarit's profile

Sarit

549 posts in 2955 days


#14 posted 11-10-2017 05:55 PM

Also would somone mind following the SS instructions to increase the travel and then taking a photo of the rivet/slot like I did at max travel? I think that’s the only way to know for sure what the max travel looks like.

The instructions below: (note back the 19mm nut far enough that it doesn’t come in contact with the bracket before the yellow bolt starts to rise.

View Sarit's profile

Sarit

549 posts in 2955 days


#15 posted 11-15-2017 05:59 AM

Looks like they gave me the bolt for the ICS instead so they sent me the PCS bolt.The PCS bolt is exactly the same size as the one I have. The SS tech confirmed that the bracket isn’t suppose to go all the way down and that it is supposed to get bound in the bolt shaft. Meanwhile I did measure the dado and it is slightly over 8.125” but my calipers aren’t that long so can’t get a very accurate measurement.

In the end I chucked the ICS bolt in my drill press and filed down the diameter until the gap would widen enough for my dado stack. The diameter was right at 0.400”. I don’t think this weakened the bolt in any way as the slot for the rubber O-ring is still smaller after filing down the shaft of the bolt.

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