They're slightly thinner than a thincut Alison but too thick to use on the spacer plate. I've had another play this afternoon and find that the best combo for me is emboss plate, 2 spacer plates (or spacer & tan pad) die, then the blue plate from the charm set. Cuts quite a bit into the plate and needs a fair bit of pushing on the handle but even the snowflake arms cut cleanly from thick hammered card.