A few nuanced questions, Festool and TSO parallel guides on an STM 1800

[Dr. P. Venkman]

When I use the TSO PG with GRS, I rip a 5mm edge to start.  Then reference that edge with the TSO PG flip stops to the parallel dimension I want.  For that parallel rip cut, the GRS is not touching the edge of the plywood.  I leave a small gap.  Only the flip stops touch the fresh cut edge.  After I have 2 parallel edges on the panel, then I use the GRS against the fresh edge to begin cross cutting.

Ha! You're a faster typist than me, but that's what I was getting at.  Having the GRS "disengaged" from the material is the only way I can see to stay parallel.

I still don't understand TSO's claim of "square and parallel in a single cut."

 

[Coen]

TSO advertises the ability to "square and parallel in a single cut," and I don't understand how that's possible.

If the other corner is already square and the cut not too long, you can get away with one PG.