fs 3000/2 not straight

denmark

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Jun 16, 2017
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My FS 3000/2 is not straight.  After cutting two pieces of 18mm birch plywood 1500mm in length with the TS-75 the gap formed between them is 1.19mm.  Indicating my track is out of straight by .60mm every 1500mm.  Is anyone else experiencing the same?  What should the tolerances be?
 
It appears to be fairly true on one end but from the middle to the other half it begins to deviate. 
 

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I have two of them and they suffer from the same problem. I also know of another whose suffer the same issue. I never noticed it until I had a fit issue during assembly. From that point on I went back to using two shorter rails and then after over analyzing it switched to the Mafell saw which has a significantly better rail connect system. A rail length of 3000 is not necessary if Festool made a decent connector.
 
Long rails not straight... and short rails have dodgy connector.
(I too overanalysed it and ended up with the MT55)

You either need to accept that the rail is bowed, or exchange or return it.
 
JimH2 said:
A rail length of 3000 is not necessary if Festool made a decent connector.

One of the main reasons I went with Mafell for my saws, is their rail system.  It was fortunate I had not yet invested in numerous Festool rails, or spent well over $300.00 for the 3000 rail, which besides having this accuracy problem, is difficult to ship or store.

 
[attachimg=1]​

From its limited use so far, when setting up with steel ruler and or sliding square mine appears to be out by 0.5mm in the centre but accurate at each end. And frankly, I can live with that over this length.

However after the cut, the ply sheets appear to be accurate. Therefore I am wondering if this is due to how I initially cut the edge strip rather than any inaccuracies in the rail itself. 

However it's early days! 
 

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are you supporting the rail in the middle of the cut? Meaning the rail isnt sagging anywhere? Are you applying even pressure on te saw through out the cut ?

Have you checked to determine if the rail is bent? How did you check? Straight edge ?
 
Anything produced in quantity will have a certain amount of deviations.  I have at least one of all the rails excepting the HUGE one.  When I bought my 55 during a recon sale the 1400 that came with the saw was out 2mm on one end from about 18" of the end.  I called Festool service and three days later I had a new rail.  I check all my rails against 8020 extrusions and used to use one of those extrusions to join my rails with the Makita joiners.  After a few years of that I bought my last rail the 3000.  It is dead on straight against a 96" piece of 1530 8020, an extrusion flat and straight enough to build CNC machines.  I just did a rough count and the nine rails I own excepting the one that was out (it's still in the box) are all perfect against the 8020.
 
jobsworth said:
are you supporting the rail in the middle of the cut? Meaning the rail isnt sagging anywhere? Are you applying even pressure on te saw through out the cut ?

Have you checked to determine if the rail is bent? How did you check? Straight edge ?

I have a long bench setup allowing it full support.  I only realized the problem upon needing it for a large project.  Two cuts placed together formed a gap.  I also have a long Stabila spirit level known to be straight and it indicates the same amount of error.  In the end to finish the job I had to join together two shorter rails and was able to produce a dead straight cut but I am quite sour with owning such a large expensive track that isn't true.
 
My 1400 is also out by som mm's resulting in bad cuts. It is 5-6 years so I guess it is too late.
 
Update:

I just got confirmation from my Festool dealer that Festool will be sending me a new rail.  Thank you Festool.
 
Frustrating no doubt, nice of Festool to make good on it.

I use a center stop when ripping to mitigate lateral movement as I cut.

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