Now that would be fantastic! I'll make sure to keep an eye out for some of your test results.vivi wrote: ↑Tue Sep 29, 2020 6:15 pmHaha indeed. I'm trying to see how long it takes for it to lose shaving sharpness with "realistic" uses, i.e. not raiding the back of a walmart for bails of cardboard and going to town :D Didn't expect it to take over three weeks.
K390 has always had impressive edge retention for me regardless of the grit I finish with, but this 300 grit edge is next level. Hands down the best edge retention of any knife I've owned.
I put the same kind of edge on my VG10 Police 4 and I plan to run the same experiment with it and compare. After doing casual EDC comparisons with each I may do some sort of controlled cardboard cutting test.
At some point I want to start a thread on low grit edges, but before I do I want to make a video comparing my two Police 4's with opposite edges. One with a 200-300 grit edge and one taken all the way up to the ultrafine ceramics. I'll show them each push cutting and slicing different objects, then maybe do an edge retention test with them depending on how ambitious I feel. I'll try to get to that before Halloween.
I wonder what the % difference would be, between low grit and high grit for both steels. If I had to guess, I would say that K390 would have a larger performance increase (percent increase) than VG10 would, simply because of the carbide content of K390.
Every time I use K390, it impresses me. Even my K390 PM2, which isn't run as hard (from HRC data shared here) as my P4, performs very well.