The drawing seems like a quite simple design, but it took some time to figure out the interlocking slots and the needed count of parts. Glued together the trivet is strong enough to carry a pretty heavy pot or pan.
This build was done on a desktop cnc-machine by Stepcraft from 6 mm birch plywood using a spiral-toothed 1.2 mm flute.
A laser cutter might be a good alternative tool to rebuild the design.
Visit https://www.zenziwerken.de/en/Household-Items/Trivets for more interesting trivet designs.
I used Solid Edge 2D Drafting to engineer the parts based on circles.