Mirror silk Penetro

Show a round mirror on a stand and tap the surface from all sides to prove it's a normal mirror. Show a silk handkerchief and move it in a circle around the surface of the mirror, and you'll magically make the silk penetrate the solid mirror. The audience can see the silk slowly penetrate the mirror from front to back. Finally, remove the silk from the back and show that it's a normal mirror!

• The base, made of fine teak, measures 23 (W) x 8 (D) cm. The mirror diameter is 29 cm. Silk is not included.