sharpening tools... how often?
So someone mentioned sharpening your tools frequently and properly in another thread.
I have watched a couple videos on turning and they included sections on sharpening tools. I've sharpened my tools once or twice now and I haven't really turned very much. One or two small pieces of ebony and paduak and one or two small pieces of what I think was poplar.
So, what are some good ways for us newbs to know when it's time to sharpen our tools? I know to do it when the tools start catching while turning, but that's obviously too late. One or two I can tell with a trivial visual inspection, such as the skew and the parting tool, but it's not so obvious for me looking at the gouges. So far I just do it "by feel" but I still think I could be sharpening more often.
What do the experts do? How do you know when it's time to move over to the grinder? Is it worth it to "touch up" before every bowl, for instance or every two or three? (I guess that would depend upon green versus dry, soft versus hard etc.) Any rules of thumb other than "You'll know with more experience"?