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Author Topic: rail wear  (Read 536 times)

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Offline eet

  • Posts: 4
rail wear
« on: January 27, 2019, 12:58 AM »
front pin wearing in rail making it sloppy. thank goodness for the slop stop.
wonder how much that would have cost if Festool came up with that fix.

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Offline Bohdan

  • Posts: 900
Re: rail wear
« Reply #1 on: January 27, 2019, 01:14 AM »
If the pin causes a wear spot in the rail, just move the rail backwards or forwards a short distance, to have the pin locate in a new spot which will have no wear.

Offline ScotF

  • Posts: 2537
Re: rail wear
« Reply #2 on: January 27, 2019, 01:22 AM »
If you adjust the MFT there should be no wear on the rail from the pin - you should be able to lift it and lower it with a finger and have it land in the same spot. The issue is likely over tightening the two bolts that secure the rail to the rail guide. Try loosening them both and get the rail on the center of the pin. Tighten one of the screws - do not over tighten. Raise the rail and tighten the other screw, again, be careful not to over-tighten. It should raise and lower without an issue. Over-tightening will cause the rail to skew on way or the other. 

Offline Michael Kellough

  • Posts: 3731
Re: rail wear
« Reply #3 on: January 27, 2019, 11:05 AM »
If you adjust the MFT there should be no wear on the rail from the pin - you should be able to lift it and lower it with a finger and have it land in the same spot. The issue is likely over tightening the two bolts that secure the rail to the rail guide. Try loosening them both and get the rail on the center of the pin. Tighten one of the screws - do not over tighten. Raise the rail and tighten the other screw, again, be careful not to over-tighten. It should raise and lower without an issue. Over-tightening will cause the rail to skew on way or the other.

Actually the rail should be skewed a little to the left. The reason being that there has to be some slack in order for the rail to fit over the pin. Without being skewed the slack would allow the position of the rail to vary making it unreliable.

In use simply pull the rail a little to the left before you lift and when you set it back down over the pin.

If the pin has already worn a groove in the rail maybe the edge of the stamped steel pit is too rough. Make it smoother with a fine file or sandpaper and then do as Bohdan suggests. Be careful to maintain the skew (or maybe a little less skew).