Originally Posted by voxsartoria
Be careful: don't perforate so deeply that you strike gemming.
Sometimes, the backed up pressure of the disintegrating plastic and cardboard is so great that there is a detonation of confetti-like material through the perforation, similar to a circus clown blunderbuss going off.
I learned of this danger on teh StyleForvm as well. It's a real treasure box of scholarship.
Funny, I never...