TS - 75 & CMS - TS problems (doesn't work :( )

BMG

Member
Joined
Feb 23, 2020
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7
Hello,

i'm new member here, but already posted few posts :)
I ended up finding FOG because of mu problems. I own CMS-GE, CMS-TS75 module, TS-75 saw and all other CMS accessories except. rip fence (unfortunately?).
So the problem is - i cannot cut straight and square cuts [crying] after investing so much money into whole system (all accessories, vacuum, cyclone etc.) i want to cry  [scared] because i cannot make a simple straight and square cut of any board.
I'm tearing my hair over weeks of reading - testing- reading-testing- failing and failing.

What i have done so far and my observations:
1. blade square to CMS table top. I have managed to adjust it +- square. I tried to square blade with saw removed from CMS on flat surface, but once put into CMS it's out of square. My CMS module is dead flat, no observable gaps once metal square is put on module top. So i adjusted blade to be square with saw inserted into CMS.
2. tighten everything - i have tightened 2x green roller so saw is dead locked into CMS rails, all other nuts are hard tight.
3.Mitter gauge. For a fence i use mitter gauge. oh what a failure that is:
3.1. i tried loosen all nuts (except V groove nut) and place fence to blade so it is parallel and tighten all nuts. Ok, but to make a cut i need to move it back from blade  [crying] and once i move it back it is not parallel anymore ...  the problem is 2 fold: first once nut it loosened it wobbles like crazy meaning with only one nut unfastened it doesnt keep parallel to blade. second if i adjust anything while all nuts loosened it will get out of parallel once single nut is fastened [blink] crazy!!!!
3.2. no matter how hard i fasten nuts whole mitter gauge has some movement.
4. I observe that saw blade is not centred in CMS-TS module top groove. It is at an angle and riving knife is touching on side of groove.
5. Saw blade square to table changes depending on how far saw is plunged.
6. don't know if it is ok, but my riving knife wobbles to the sides - it is not fixed as blade is.

Result - the cut is not straight along the length of rip as well as it is not square ...

It drives me nuts! Nothing on this saw and CMS works as i would expect, is it faulty or am i stupid?

Table is flat:
View attachment 1
Adjusted blade to be square on the flat surface, saw removed from CMS:
View attachment 2
But once i put it into CMS it is not square:
View attachment 3
Squaring blade with saw inserted into CMS to make it square to table top:
View attachment 4
Terrible gaps and crooked rip cuts. pieces put together as they were:
View attachment 5
one piece flipped - total disaster:
View attachment 6
 

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BMG said:
I tried to square blade with saw removed from CMS on flat surface, but once put into CMS it's out of square.
I don't have CMS, but I know why this particular bit is happening. Plastic trunnions on TS saws are too flexible and match poorly with aluminum casting (tilting part). When saw sits on a flat surface and at 90 deg it steadily rests on trunions AND two set screws (4 points). Once it's hanging upside down on the trunions only it tilts slightly. You can actually slide a piece of paper between tilting part and set screws in that position.
 
Have you tried making this cut on a rail instead of the CMS?  I believe the issue is with the CMS.

I actually prefer using a track saw on a rail over a table saw when I need PERFECTLY straight rip cuts on solid wood.
 
I'd be returning it, [member=72436]BMG[/member]. Sounds like way too many problems with it for you to ever be satisfied, especially considering how much it costs.
I'm not really familiar with this unit - do festool recommend using the mitre gauge as a rip fence?
 
I think [member=15585]Svar[/member] is onto something. There may be a slack that makes the saw drop in one direction when mounted upside down, possibly the bevel adjustment front and/or back. Have you checked the brackets that holds the saw itself also? Is the saw new, or used, and if by who? Have you checked that everything is tight and fully functional, out of the module?

I’m receiving a pre-owned TS 75 within a week or two to drop into my TS 75 module. I’ll certainly check this when I have received it.

Be sure to watch Festool TV videos on YouTube, to see if you have missed something.
 
The CMS is a bit fiddly  [blink]

Lots of little things that can affect the cut quality.  My fence does the same thing to the inserts.  I adjusted the fence and got a feel for the amount of tension to apply to the lever.  Check your set up constantly and you get better with it over time.

Things to watch out for off the top of my head are:

Plate deflecting.

Blade guard riving knife not in line with the blade.  TS75 plate.  I use the hose and hose clip to hold it in line.

Fence not parallel or deflecting the plate.

OF plate insert ring and adaptor ring not flush.  This is by design but can affect small workpieces and I find it a negative feature.

The outfeed table on the GE stand is hard to keep adjusted for me.  The clips on the stand can easily be knocked out of adjustment.
 
Once you mount the saw in the module.  You have to re-adjust the blade to the plate. You have to adjust the fence to compliment the toe in on the saw. Loosen the fence, including the 2 allen screws. run the fence up to the blade and tighten the 2 allen screws first then tighten everything else.  the rear of the fence should be about where the the rear teeth of the bade are.

Also Slow down your feed rate
 
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