The magician displays a sheet of plexiglass enclosed in an attractive red frame. The spectators can examine the frame.
Introducing two playing cards and a pencil, the magician places it next to the plexiglass, on the frame. Then, the magician pushes the pencil straight through the cards and the glass!
Removing the pencil, the card is shown to have a hole running through it. The glass is unharmed.
Easy to do. Full secret and detailed instructions included.