For one wallet you will need:
Electrical/insulation tape - This comes in a variety of bright colours such as these value packs from Maplin
. Good quality tape (thicker, cleanly finished at the edges, not too gooey) is a joy to work with but is not essential.
Some reclaimed thin, tough translucent material (see sizes in step 2) - The printed circuit acetate found in computer keyboards is ideal, but hard to get in bulk. I have also used old acetate maps, old window blind material, or what looked like waterproofing membrane. The translucency allows you to see the items inside the wallet from the outside, so again is optional, opaque stuff is also fine.
The template downloadable in the zip below, or from here
- it is basically two rectangles. There's also a great quick assembly guide below drawn by Annalisa Simonella, includeed in the zip. See the Readme file for format details.
A sewing machine and tough thread - upholstery thread is ideal, or thick cotton thread, or a polymer based thread.
A craft knife and new blade.
A straight edge and cutting mat, or a laser cutter.
A small piece of scrap cardboard or plastic. (~ 50mm square)