Slingshot Pouch Stencil

This is a stencils that makes it easier to cut out the pouches for a slingshot.
They are modelled after these instructions on YouTube by 1611torsten:
How to make the fastest slingshot bands; extreme speed PART 1.
They are customizable - just comment out the size you want in the openscad file:

//profile_scale = 1;            // for 4 cm   pouch = 7 mm steel ball
profile_scale = 1.125;     // for 4.5 cm pouch = 8 mm steel ball
//profile_scale = 1.25;       // for 5.0 cm pouch = 10 mm steel ball
//profile_scale = 1.375;     // for 5.5 cm pouch = 11+ mm steel ball