Woodpecker square to guide rail attachment

[Stacker-Steve]

Has anyone attached one of the large Woodpeckers square to their guide rail?

I have the Festool version of the TSO square attachment and I find it’s not as accurate as I’d like. Idk why, just seems every time I use it, it’s off by as much as a 1/16 depending on the length of the cut.

 

[onocoffee]

Some of the other guys have more experience with this and will have more pointed observations to share, but in my experience, the square may be perfectly square but you may still have to set the rail. I've found that on my own (new) MFT setup, I have to check square at the hinge and then make sure that the rail support on the other side is also set correctly. Even just a smidge off will make the cut wonky. I'm suspecting this is what's happening in your case - the rail is set square but the other end isn't laid down as precisely.

How to do that better and rectify the situation? I don't make cuts like this much, and when I do, I mark and set both ends of the rail. But I'm sure others have dealt with just this issue.