How to make the Jigsaw Killers headtrap for next to nothing

Step 2 The jaw pieces

The jaw is the central part of this device. It has to look solid enough to perform it's purpose.
I started with two strips of corrugated card (approx 7cm x 55cm).

The two pieces should be folded into U shapes, remember to make one smaller than the other so the two can sit inside each other.

This is now the only important measurement. The two jaw pieces should be sat one on top of the other, held against the face and you should mark on the peices where the strip cross over your ears (see photo). The gap between the two strips should sit just over your mouth (if you try you should be able to kiss it) and your finger should be right in the middle of your ear.

Measure the distance from the front of the mask to that point, mark the middle of the strip and draw a circle around it, draw a tangent line from this circle to the top and bottom of the jaw front.

Two more strips of cardboard need to be fitted to hold the mask in place. One goes round the back of the head and one goes over the top. These will hold the jaw in place.