I have, I can layer 3 felts and get pretty clean cut and that's with reg felt not even 100% wool. I use framelits to cut cotton, satin, organza, lace, tulle and silk.
Originally Posted by casemarten
Btw, I've never tried to cut more than one layer of felt at a time. But you can lay out several framelits side by side to cut at once so you get several pieces out of each press.