It should be noted that the creator Dror Benshetrit retains all legal rights to the idea. The articles say he plans to open source it for use in developing countries, but other commercial uses must be licensed. I reverse engineered a version from frames in the video, although it's close, it's not the proper ratios/dimensions. I did it to get a feel for the concept, and I share it here for the same reason. I don't have a commercial application for it at this time, and if/when I do, I will seek the proper licensing.
Step 1: Cut a strip of wood
The first step is to set your saw to a 15 degree tilt. I used a magnetic gauge for this. It's 1 degree off in the photo because the teeth on the blade cause the gauge to sit at a 1 degree angle so I adjusted accordingly.
Next, I set my fence to 3" because I had already cut some off the material so it already had one 15 degree edge on it. If you're starting with a fresh piece, set it to 3.5", cut it, then set it to 3" and cut the other edge.
The goal is to have both sides at the same 15 degree angle as shown in the last photo.