Each to his/her own, but for sake of escaping the writing of another book here, I won't even waste space with My thoughts on other woods. I don't disagree with everything that has been said when referring to other woods, but I thought We were talking about about the coloring of purple heart here, and My experiences with It has been that I don't need to seal It between every turn, especially where handle wood is concerned. If someone wants to, then I suppose It doesn't hurt. I just haven't found It to be necessary in My situations. There may be a little of a gray area when talking about PH shafts though, as when turned that small, I have on occasion been witness to very minute amounts of movement, but very rarely have I seen any with larger diameters. I wish all woods were as stable and easy to work with. I think everyone should experiment and find what works for them, because what works for one may not be same same for another, and every species has It's own characteristics.