Have a silk or small sponge ball penetrate a solid mirror!
Begin by showing both sides of the mirror. A silk is then shown which you begin to rub on the mirror as if you were cleaning. Slowly the silk starts to penetrate the center of the glass. Halfway through, the mirror can be turned around and shown on both sides with the silk sticking out the opposite side!
Now face the mirror towards the audience once again and the silk is pulled completely through.
There are no visible holes!
The penetration takes place right before the eyes of the audience.
The mirror is shown to be solid before and after the effect.
