I have the circle cutter with the rotatory blade attached and it is easy making them that way. Like someone mentioned you could get a pinked blade, I think, for it. The blade is so tiny, I am not sure it would work very well.
I am sorry I was not more help. 300 does seem like a daunting task. Doesn't someone in the group have a accucut go that has that disk? If not maybe call the quilt store to see what they suggest.
Last edited by RedGarnet222; 08-28-2016 at 08:08 AM.