Hi John
I have to honest I haven't tried anything as big as a 600 tile.
Biggest was a 400 odd and I was worried about diagonal cuts on what I had already done.
I went for a compromise
The monty lost it for me on the footprint - no way it would fit in my little polo, but as I think I said elsewhere, for repetative cuts on my course I looked to the montolit, but as a newbie I opted for the 'see the cut' Rubi
Sorry I can't be of more help
frogeye