Cut quality suddenly horrible

[Tswood]

Hi All,

I got my TS75 last week and cut Baltic birch wood strips. No issues at all but now I get heavy blade marks in the cuts. I didn’t hit any nails and didn’t change any settings. What’s the issue? Is the blade the reason? I have the universal blade which came with the saw. The saw is tight on the track, track clamped down.

TiA

 

[Michael Kellough]

Looks like you could use a fine tooth blade. The TS75 comes with a fairly course tooth blade because it’s usually used to cut thick stuff.

 

[CeeJay]

I’d suggest cleaning the blade. The glue in BB can gum it up pretty quickly.

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[Tswood]

Looks like you could use a fine tooth blade. The TS75 comes with a fairly course tooth blade because it’s usually used to cut thick stuff.

It did cut perfect for all 40 strips before.

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[semenza]

Those look like two very different types of cuts? 

      Were the good strips rip cuts in single 3/4" thickness?

      And I guess the bad cuts are cross cuts in some sort of stacked arrangement?

Seth

 

[Tswood]

Those look like two very different types of cuts? 

      Were the good strips rip cuts in single 3/4" thickness?

      And I guess the bad cuts are cross cuts in some sort of stacked arrangement?

Seth

I cut first the strips (1in) then glued together and now cut 45deg. Will be an end grain table top. All went well, also did a sample (see pic) but now it seems the saw is bogging down in between (that’s the huge marks you see) and also the kerf seems larger now (I did 3-3/32in but pieces are sometimes less than 3in)

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[Tswood]

When working on my sample the TS75 cuts where freaking awesome. I did everything with the TS75 on the piece. And now it’s cutting like an axe [emoji15]

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[aloysius]

Check for arbour float:  does the saw blade move laterally at all?  Is there a hint of "looseness" in the shaft the blade mounts to?

I assume you're just plunging the minimum thickness of the material plus another 5mm or so rather than full depth?

 

[tjbnwi]

I’d clean the blade.

Tom

 

[Tswood]

Check for arbour float:  does the saw blade move laterally at all?  Is there a hint of "looseness" in the shaft the blade mounts to?

I assume you're just plunging the minimum thickness of the material plus another 5mm or so rather than full depth?

It doesn’t feel like it’s moving lateral, checked that already. I just took the blade out, the shaft feels stiff no movement in any direction. And yes it’s about 3mm over the piece. The blade looks fine as well. The hole thing now also messed up the splinter guard (it’s not a straight line anymore). As I mentioned before, while cutting the saw acted weird like almost bogging down, those moments the blade seems to have an extreme kerf.

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[Tswood]

I’d clean the blade.

Tom

Does that need a clean? I didn’t cut that much yet.

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[CeeJay]

There’s a bit of gum on the plate there. That will tend to burn and leave scorch marks on the cut. As it heats up it can cause some warp/wobble in the blade, particularly on swift repetitive cuts.

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[Tswood]

There’s a bit of gum on the plate there. That will tend to burn and leave scorch marks on the cut. As it heats up it can cause some warp/wobble in the blade, particularly on swift repetitive cuts.

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Does that have such a heavy impact like shown in the picture? I just used some rubbing alc and removed it. Will test tomorrow morning (kiddos already sleeping) I’ll report back. If the issue is still the same I’ll go to woodcraft who sold me the saw last week.

PS: if that gun is the issue, is there a way to treat the blade to prevent that?

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[CeeJay]

Well be interested to see if it makes a difference.

I treat my blades with Boeshield which helps I find.

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[Birdhunter]

From looking at the cut, I’d guess the blade is now wobbling as it cuts. Wobbling would bog down the saw and produce the cut marks as shown.

I can imagine a few things that would cause wobbling: bent blade, gunky blade, loose blade, loose saw body, bent drive shaft.

I use a lot of 3/4” BB and never get a gunky saw blade. If you are cutting through glued up layers of BB, I can see getting build up glue on the blade, especially if the glue was not 100% dry.

Fascinating to hear what you discover.

 

[junk731]

You have said you checked everything, change the blade and if the issue goes away you found your problem, if it doesn't you know its a saw problem.

 

[Tswood]

Well be interested to see if it makes a difference.

I treat my blades with Boeshield which helps I find.

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Same issue with cleaned blade.

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[Tswood]

You have said you checked everything, change the blade and if the issue goes away you found your problem, if it doesn't you know its a saw problem.

I called festool and sent them all pictures, they advised to take it back to dealer and get it replaced. I noticed the body (part where the motor sits) has some play not sure if that is normal.

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[CeeJay]

Good to know that Festool are responding. Hopefully it’s a straightforward repair or replace for you.

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[Tswood]

Good to know that Festool are responding. Hopefully it’s a straightforward repair or replace for you.

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Took it to the dealer and they replaced it. Back home did a few cuts and awesomeness returned... [emoji854]

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