I made my jig using 3/4" birch plywood but you could very well make it from 3/4" MDF. If you look at the tool paths in the C2D file, it's a rather simple design. If you don't have a 45 degree bit, you could also use a 60 degree.
The hardware that I used was purchased from Amazon. I used the Powertec 71068 T-Track Knobs with 1/4-20 by 1-1/2" Bolts and Washers(Set of 10). You'll have hardware leftover, since it's a set of 10. I got mine for $9.99. Here's the link to the item: https://www.amazon.com/gp/product/B01N5WC8BK/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1