*Credit to Paul for his contribution of the Zyliss Jaw, it's a perfect fit!

I added the addition of the rotating jaw that is used to clamp round objects.
I printed it at an angle to add strength when applying pressure, and followed the printing instructions on Less's design.

The round insert has a 0.1mm clearance and I had to sand the hole a bit to create a tight fit (Rather than having a loose fit)

I hope it works for you.