Institute of ImaginationRobot LabRobot Lab

Step 2 of 8

Make the windows

While the pieces are flat, lay one on the Blu Tack and push the pencil through the middle. Put your scissors in the hole and cut a window about 5cm across in a square, or 3cm in a triangle. Leave at least 2cm of card all round. Cut windows in as many pieces as you like.

A pencil pushed down through a piece of card into a lump of Blu Tack underneath; then, seen from above, the point of the scissors in the pencil hole and a dashed circle round it where the window is cut out