I have sharpened mine twice with my lansky. First time, I used a tiny tab of leather (1” square) between the clamp and blade to grip the swedge with trial and error and limited success. Eventually got a good enough grip to sharpen it. It worked but I thought there must be a better way. The 2nd time, I took the whole knife apart and attached the clamp to the completely flat bit where the jimping/ stud is. This was a much better grip and much more reliable than the first attempt. However due to the distance from the clamp to the tip it reprofiled the edge of the blade to look more like the grind on a Spyderco Vallotton or a WE knife 601 or 606 etc. Probably not to everyone’s tastes but it works for me. And I quite like a large bevel.