I'm a tormek newbie and would say that my SP-650 is very young. I have noticed that it takes longer to achieve low grit than it did when it was new. The fine side still seem to be as effective as it was when it was new. I can clearly see the coarse side of the SG is getting more shiny. Is there a easy way to get the rough side back?
I have a 8" 150 grit diamond plate that I got from a respectable knife shop in Stockholm. This shop sells fancy kitchen knives and Shapton stones and the 150 grit diamond stones is for stone flattening. The thing is that it is way more effective than the coarse side of SP-650. I apply very light pressure when grading and the result is really good. It seem to hold up well for this particular use, way better than my DMT DiaSharp stone, that got big shiny spot when it touched the SG-250. Im very skeptical towards DMT after this.
I suspect that the light pressure used with my diamond stone doesn't get me all the way to 360 grit, but very swift to maybe 5-600 grit. This might sound strange, but even if the result from the diamond stone gives somewhat higher grit, it feel so much more aggressive, in a good way, compared to what i get with a new SP-650.
SP-650 might be the best allround grader in the long run, but when it comes to sharpen and re profiling knives with 58-60 HRC, the 150 grit diamond stone has been great.
I'd love to hear your thoughts on this.
Thanks!
I have a 8" 150 grit diamond plate that I got from a respectable knife shop in Stockholm. This shop sells fancy kitchen knives and Shapton stones and the 150 grit diamond stones is for stone flattening. The thing is that it is way more effective than the coarse side of SP-650. I apply very light pressure when grading and the result is really good. It seem to hold up well for this particular use, way better than my DMT DiaSharp stone, that got big shiny spot when it touched the SG-250. Im very skeptical towards DMT after this.
I suspect that the light pressure used with my diamond stone doesn't get me all the way to 360 grit, but very swift to maybe 5-600 grit. This might sound strange, but even if the result from the diamond stone gives somewhat higher grit, it feel so much more aggressive, in a good way, compared to what i get with a new SP-650.
SP-650 might be the best allround grader in the long run, but when it comes to sharpen and re profiling knives with 58-60 HRC, the 150 grit diamond stone has been great.
I'd love to hear your thoughts on this.
Thanks!