Thanks to Justin for demonstrating this Instructable and for drafting the dxf file.
"Submitted by Ace Monster Toys Hackerspace in Oakland, CA for the Instructables Sponsorship Program"
Step 1: Tools & Materials
*Leather -- Recommend: thin leather 2 to 4 oz weight, or 1.5mm to 3mm thickness
Vegetable tanned leather works best, but each leather cuts differently.
Do not expect consistent results across different kinds of leather.
Make sure to do a few test runs to make sure you're cutting successfully.
*Needless – upholstery needles with blunted tips work best. For example something like this.
*Thread – a heavy weight waxed works best such as this one
*lighter or soldering iron
*thimble (optional if you've got tough fingers)
*the design template .dxf file (attached to this instructable)
*a laser cutter
*an awesome hat (well, not really.... but it seemed to help Justin)