I’ve been messing around with some fairly basic geometric designs and decided to try to cut some using the thick draft board. After the job finished, I tried to remove the cut piece and noticed that it didn’t want to come loose. I applied gentle pressure to the interior of the piece (a fairly robust 4" x 4" cross shape) and the backing (not the paper masking) cracked and tore. Turning the entire sheet over, I noticed that the paper masking was not even cut all the way around the piece.
Has anyone seen this? Am I doing this correctly?