Step 1

Disk is middle, forced flick

Step 2

Cutter in the open side slashes from open to break. This cut happens on stall -1 or 0. Looks for easy break throw, but more importantly, creates space open side.

Step 3

Middle cutter now has room to work. Make a cut and get the disc. Opposite side cutter goes deep for continuation. Initial cutter fills back into stack.

Step 4

Easy

Step 5