MM on these woods I have skewed the damn thing every which way you can skew it. It lifts the fibers out on those bad places. It's not like your typical tearout problems. These are areas that sort of pluck out of lift out and it doesn't seem to matter how sharp the tool is or necessarily the angle you approach the cut. Am I getting little ridges, no, I control the feed rate so it's just as smooth as my wider gouges. The difference is it doesn't pluck out the wood on those bad areas.
I can sympathize with you, John..........
The one rule that is true for woodturning, is different pieces of wood require different ways to get a good cut....In other words, if it worked this time, it might not necessarily work as well the next time, for another piece of wood.
I have experienced the same kind of tear-out on bowls using gouges on the exterior long grain. At the point where the wood grain is going exactly the same direction as the cutting edge progression is. A little "waviness" in the grain here would do wonders, but we have to deal with the cards we're dealt. The solution is to get an ever increasing fineness of cut until the tear-out no longer exists......or, is so small that attention to sanding is the next logical step. But, of course, that is much easier said, than done.....
🙁
If we were machines, we probably could do a little better in this one little aspect, but we are human, and understanding that is important. (Being human also means we are capable of that creative artistic touch that no machine can EVER create.) Anyway, since our bodies aren't ridged pieces of steel, we only have a certain level of dexterity, and the ability to guide a tool through a cut varies with each individual. We can increase the odds by knowing what the limitations of tool shapes are, presentation, sharpness of edge, polishing tool shafts and tool rest surfaces........but, in the end, it's how well all of that knowledge is applied through your hands. I'm probably not making any sense at all, except to those who don't need to learn what I'm trying to say anyway........because they have already "arrived"!
When we run into these tear-out issues, there is a series of things to do......try this, and if that isn't the solution......then try that........and then, this......etc, etc. I think most can relate to that aspect of it. Don't let the frustration of failure get the best of you......keep doing something different, because there is a way to solve most any issue.
I've said this before, and I suspect I'll get howls of disagreement from the usual people........but, if all else fails, a SCRAPER is what will give the absolute finest cut that can be had. It takes knowledge and patience......but, the particles of shavings can be so small that it's hard to tell them from pure dust......but, they are indeed shavings. It takes constant truing of the edge, and knowing just how to present that edge, and SLOW deliberateness.......but, it also takes something that serves to illustrate that we are not all equals.......and that is your ability to use the grey matter, and your eyes, and your ears.........and, process all of that information THROUGH your body, shoulders arms, and hands.
There's no way to tell anyone what I'm trying to say........it cannot be taught. It can ONLY be learned through hands on application......and a logical and accurate contemplation of the input. No matter how intelligent, or hard one tries........some of us will never "get it", because just as with seemingly equal pieces of wood, we are all different in ways that may not be evident on the surface.
ooc