Author Topic: Bevel cut with TSC 55: Tearout and spinter guard  (Read 365 times)

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Offline Josh2

  • Posts: 45
Bevel cut with TSC 55: Tearout and spinter guard
« on: July 27, 2020, 03:49 PM »
Hi,

I am having problems with bevel cuts with my TSC 55. Depending on the wood, I get significant tearout. The offcut side actually looks much better. It looks like the cut line is slightly to the right of the sprinter guard of the rail, which leads to the tearout. Anyone can explain this? Am I doing something wrong? The TSC 55 is set to 45 and I firmly hold the saw on the rail to that it does not tip over.

The attached image includes two examples with both sides of the cut. Offcut looks much better and I didn't even set the offcut splinter guard.

Thanks!

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Offline grobkuschelig

  • Posts: 669
Re: Bevel cut with TSC 55: Tearout and spinter guard
« Reply #1 on: July 27, 2020, 04:50 PM »
Did you check your blade?

Other than that, I would try and re-position the splinter guard or put on a new one, to see if that fixes it.

Let us know how you get on...

Offline jcrowe1950

  • Festool Dealer Affiliate
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  • Posts: 72
    • Woodcraft Chattanooga, TN
Re: Bevel cut with TSC 55: Tearout and spinter guard
« Reply #2 on: July 27, 2020, 05:05 PM »
Hi,

I am having problems with bevel cuts with my TSC 55. Depending on the wood, I get significant tearout. The offcut side actually looks much better. It looks like the cut line is slightly to the right of the sprinter guard of the rail, which leads to the tearout. Anyone can explain this? Am I doing something wrong? The TSC 55 is set to 45 and I firmly hold the saw on the rail to that it does not tip over.

The attached image includes two examples with both sides of the cut. Offcut looks much better and I didn't even set the offcut splinter guard.

Thanks!

    You probably need to replace your rail mounted splinterguard. Has this rail only been used with your TSC55? The way the saw is supposed to work is that the bevel cut should use the very edge of the splinterguard from the 90˚ cut. One more thing to check is to see after you adjusted the angle to 45˚ if your zero clearance splinterguard (green adjustable splinter guard) on the saw is not interfering with the cut by lifting the saw. I have not experienced the issues you have with my TS55. Best of luck solving your issues.
Festool Specialist at Woodcraft, Chattanooga, TN

Offline Svar

  • Posts: 2154
Re: Bevel cut with TSC 55: Tearout and spinter guard
« Reply #3 on: July 27, 2020, 05:53 PM »
The cut on the right is not bad, particularly for plywood. That's not quite tearout, i.e. those remaining fibers are from kerf area and not affecting your piece.
Repositioning or changing splinter guard won't help as you'll trim it off again once the saw is back to 90 deg.
It is common for track saw blade to be off by a millimetre or so when at 45 deg., just sloppy manufacturing. The only remedy if to shim pivot brackets, lifting the saw higher above its base.
« Last Edit: July 27, 2020, 06:09 PM by Svar »

Offline Josh2

  • Posts: 45
Re: Bevel cut with TSC 55: Tearout and spinter guard
« Reply #4 on: July 27, 2020, 08:28 PM »
Thanks everyone. 90 degree cuts are perfect so I am not convinced that it's the rail splinter guard. The rail was previously used with a HKC55 but I payed close attention that the TSC55 trimmed additional material from the splinter guard when I switched. Otherwise, I would have gotten a new spinter guard.

Here is a picture with many 45 kerf lines in some crappy plywood. Offcut side is always on the top, offcut splinter guard not attached to saw. Two observations:
- Using two batteries leads to big improvements (the cuts on the top are just with one)
- The cut is pretty much perfect at the beginning and the problem only emerges when I get closer to the fence
- I did move the fence to a different position on the homemade MFT, used different parts of the rail etc. but the same happens.

And @Svar is right, it's not really tearout. It's still not clear to me why the problem only occurs when I move closer to the end of the board. If the 45 is off by a millimeter, why not for the entire length of the cut?

ps: As a side note, TSC55 with a single battery struggles with the plunge at 45 in 3/4'' plywood. Motor stopped about 3 times on each plunge and the saw moves pretty slowly. Two batteries solve all of that.

Offline Svar

  • Posts: 2154
Re: Bevel cut with TSC 55: Tearout and spinter guard
« Reply #5 on: July 27, 2020, 08:35 PM »
Here is a picture with many 45 kerf lines in some crappy plywood. Offcut side is always on the top, offcut splinter guard not attached to saw.... - The cut is pretty much perfect at the beginning and the problem only emerges when I get closer to the fence
It could be that trailing edge of the blade knocks those fibers off. So you have them remaining only at the end of the cut where back of the blade has not reached.
« Last Edit: July 27, 2020, 08:46 PM by Svar »

Offline Josh2

  • Posts: 45
Re: Bevel cut with TSC 55: Tearout and spinter guard
« Reply #6 on: July 27, 2020, 09:00 PM »
Good point! I will try that tomorrow. The 45 cut would still be off by a millimeter or so from the splinter guard but I guess that is common for bevel cuts with tracksaw.

Here is a picture with many 45 kerf lines in some crappy plywood. Offcut side is always on the top, offcut splinter guard not attached to saw.... - The cut is pretty much perfect at the beginning and the problem only emerges when I get closer to the fence
It could be that trailing edge of the blade knocks those fibers off. So you have them remaining only at the end of the cut where back of the blade has not reached.