TS75 Base warp?

[Mirko]

Hey everyone,
Have any of you noticed cupping on your saw bases? I hope you can see what i'm talking about in the pictures,
But the saw base on my TS75 is cupping upward about 2.5mm. I think this is, what is effecting my miters with the saw.
Any feedback would be appreciated.

Mirko

 

[Brent b]

Mirko, I checked this morning and have the same warp.  I've had trouble getting good long miters but assumed this was user error.  Hmmm.
Brent

 

[Mirko]

Thanks for checking, Brent :-* could the cup be there to prevent scuffing in the middle?
I seem to be having little luck with the saw latly, today I snapped off the plugit on my TS75  ouch!!
Through the course of a week I've been getting strange noises combined with snagging and biting while running the saw through a cut, that produced a very inconsistent cut with very aggressive saw marks. It wasnt smooth, something is not right.
While trouble shooting this anomaly, I realized the base was cupped.
The saw needs to go back to Festool and get fixed and I really would like them to give it run, to test it.

Christian O, will Festool run the saw to check it out if I don't believe it to be running right?

The plus side to all this is I'll buy a TS55 as a back up while the 75 is in the shop 

Mirko

 

[Amateur]

Mirko,
I looked at the base of my 55 and there is a relief molded in the area that you refer to. It is a very slight.

 

[Christian93117]

Mirko,

Please get in touch with David McGibbon at the service hotline (1-800-554-8741). He will help you getting the saw to the Goleta/CA repair shop
and will check your saw thoroughly.

Regards,

Christian

 

[ryansmythe]

Mirko

just had a look at my ts75 and have the same cup on the base but the saw is cutting well. so there must be something else, hope you get it sorted out soon.

 

[mastercabman]

does the base flex if you push down on it?  if not,i don't see how that would effect your cut.i will check my saw tomorrow.

 

[Mirko]

Thanks for the replys guys. :-*
Christian, I will be in contact with David on monday, thanks for the help.

What I've found trouble shooting this was, if i set the depth of cut to 2 mm and pass the saw over a 500 mm board, the blade just scuffs the surface of the middle of the board, while the start and end of cut will cut 2 mm deep. I believe the cup in the base will let the saw dip down on the entry and the exit of cut.
When the saw is sitting on a rail that is supported only by half of the saws base length, it cuts deeper because the rail will sag when the cut is started.
This does not bother me much when doing a cut at 90 deg. but I think it has been effecting my beveled cuts, byway of the deeper exit and entry of the saw sagging the rail, ultimately removing more material.
If I was to use a hand plane with a cupped sole, the same thing would happen.

Mirko

 

[Brent b]

Mirko, so if do I have this right:  if the guide rail does not extend past the material a distance equal to the saw's base length then the saw will ride along this curve and eat into the bevel?  If so then the solution would be to have longer guide rails?  Great sleuthing by the way, worthy of the bloodhound gang.
Brent

 

[Mirko]

Brent,
The same thing appears to happen with a guide rail hanging off the end of the board. In lieu of my recent misfortune with my saw, could you try it out for us?
I'll hang back and watch the boards for you...and put back a "White Russian" in your name.
ok...get to work! 8)

Mirko

 

[Brent b]

Mirko, would be greatly honored to take take over the detective work but my neighbor is suing me for remodeling my house and I must be ever so careful with the noise and dust.  So until I get a setup away from her prying eyes it's drywall and paint for me.  Ummm, and I only drink cheap gin and Tito's vodka but would be happy to be introduced to a white Russian as long as she didn't come from a catalogue. ;D
Brent