As for cutting wide panels, your setup can be as simple as two lengths of T-track, each with its own stop. You first set one stop as needed (I'll get to that in a moment) then set the second one to the first. These can be placed with their stops up against the edge of your material that is opposite from you intended cutline -- the edge that you want to be parallel with. You can use a speed square to assure they sit square to that edge. Clamp in place. Now your Guide Rail can placed up against the far end of those T-tracks. And you're good to go. Only what about setting those stops...
The T-track stops would need to be set to a distance (the width of your Guide Rail) shorter than the desired width of your panel. Thus, the width of your Guide Rail needs to be established. That part is simple. I'll attempt to explain if need be, be rather than go on and on with explanation, let me offer a drawing that I've quickly made for you -- please excuse that I only did this quickly and from an existing file with other stuff... anyway:
[attachimg=1]
As I said, this was in haste. The Tracks are not right -- could sit on side or flipped over. And I didn't create stops. But with any luck at all you will see that it isn't all that complex.
This is how I first set up for wider parallel cuts when I first got my Festool saw. Only, I used Incra Incremental Tracks and Shop Stops from Woodpecker's rather than the T-track or Scale Track. That was over 9 years ago. [blink]
Sorry for the poor explanation. I hope this is of help. [unsure]
