I wanted to see if it was possible to do this with a standard VG10 Tojiro DP Gyuto 240 mm with a 50/50 edge.
The knife is a loaner for Chefs i sharpen for, and it has already been sharpened several times.
It's current edge measures 25 degrees inclusive, is ever so slightly convex, and was finished with 6 micron diamond compound on a Paper Wheel.
Thickness behind the edge is 0.53 mm. (new ones measure 0.4 mm)
The Roma tomato used was fresh & firm, and as you can see had a rather tough core,
