Interesting question. I got serious about sharpening about 2 years ago. Before that, I was so scared of sharpening (I was afraid I couldn't do it, afraid I was going to ruin the knife, etc.) that I would only buy kitchen knives with lifetime sharpening guarantees, lol. Then I decided to get serious about it: this was a skill I wanted to acquire. I started with the Spyderco Sharpmaker. The first knife I sharpened was a SAK Classic. I watched a ton of videos on YouTube and read lots of instructional websites about sharpening before I started. I was stoked. I carefully went through the different stones, per the Spyderco instructions and all the things I had watched and read, and the results were less than stellar.
My results were sharper than the factory edge, but still wouldn't even cleanly cut stiff magazine paper or "pop" hair. I was very frustrated. I followed all the instructions! Why wasn't I getting results?! I tried it again and again, and I tried other knives like my Buck folder, and I still couldn't get a scary sharp edge. I didn't realize at the time that there were major holes in my theoretical understanding of sharpening (as well as a lack of experience). I didn't understand how to apex an edge. I didn't understand burr formation and removal. I didn't understand why an edge gets caught on paper. Basically, I didn't really know what I was looking for, so it was impossible for me to achieve a goal.
I went back to the drawing board, read a lot more, watched a lot more videos. Slowly, the concept started to sink in. I bought some DMT stones, the Spyderco Ultrafine bench stone, and a KnivesPlus Strop Blok. I tried sharpening my knives again, and lo-and-behold... I still couldn't get a scary sharp edge. I still had much to learn; I didn't understand that I was making such deep scratches with the extra-coarse DMT stone, and I wasn't spending enough time on the finer stones to completely erase the scratch patterns. I also wasn't lightening my pressure or holding a consistent angle on the stones. Additionally, I didn't understand that it isn't the fineness of the grit that finishes an edge that can push-cut paper; it is the apexing of the edge and the complete removal of the burr. I mistakenly thought that the Spyderco Ultrafine stone and the strop would put the hair-popping edge on the blade. I was wrong.
So, I went back to square one, watched the videos again, read the tutorials again, and the concept sunk in a little more. I sharpened more knives and eventually realized what I was doing wrong. Now I can get a hair-whittling edge because I have the experience and the theoretical knowledge. I know that I need to fully establish my edge with the coarser stones before moving up in grit. I know that I need to erase the scratch pattern of the lower grits. I know I need to progressively lighten the pressure on my final stones. I know I need to knock that burr off and check the edge often for progress. I know I need to keep my angle consistent and sufficiently low to put a good edge on. I know that the final strokes on the ultrafine stone need to be feather-light to knock the burr off. I know the strop is to finish the edge and refine it yet more. I know that I am done with an edge when there is no trace of a burr and the edge slices newsprint without catching. I know that I don't atually need to finish on the ultrafine stone, and I can get a scary sharp edge on a lower grit stone that will be "toothier" which might actually be better for my needs.
But I still have much to learn. I just ordered a set of Japanese water stones (Arishiyama 1000 and 6000), and I'm excited about practicing with those. So the journey continues, and I still have far to go.
