What are the folding methods?

Two of the most common folding methods are the C-Fold and Punch Down.

1. C-Fold is done by squeezing the sides of the cup together then folding it in half until its rim forms a C shape.
2. Punch Down is done by pushing the rum of the cup with one finger and then squeezing the sides of the cup together. The base of the cup is held until it is inserted.