custard":9n50srky said:MattRoberts":9n50srky said:Given what you say about needing to true up the stone, I'm thinking I would need to get the diamond dressing stone then if I went with the tormek.
Personally I'd say you absolutely need the diamond dresser, and it needs to be used every three or four sharpenings. I was surprised to read "Sunnybob's" verdict, but if that's his experience then fair enough.
The Tormek has a clever little dressing device that operates on a screw thread, so the diamond stone tracks across the entire stone, you have to operate it at a consistent speed to get a perfectly flat surface but that comes easily enough with practise.
It was interesting to read "Music Man's" account of good results with planer knives and contrast that against "No Ideas" experiences. I suspect that the shorter the knives the better the chances of being satisfied, but in any event it requires a rigorously meticulous and methodical approach to maximise your chances of success with planer knives.
Good luck!
I use the dresser when (and only when) the stone surface is not flat, e.g. it's got dimpled with sharpening narrow chisels. Since I do a lot of my chisel and plane sharpening by hand, the Tormek is only used for those when they need it, ie secondary bevel too far gone, chip in the edge. And for plane blades I ensure that I swept across the whole surface of the wheel. For planer blades (mine are 300 mm), the design of the jig means that you have to sweep them throughout the sharpening process, so the wheel does not get out of true. The grader also keeps it flat. So in my own experience I do not need to use the diamond dresser nearly so often. This would be different if one were doing (say) turning tools in a jig that did not let you swap across the whole wheel. I think the 'fingernail' jig is of this type and then you would indeed use the dresser much more often.