Ha! I have a couple of boxes of bowls that are seasoning. They’re in the house, and every time I pass the boxes I’m tempted to pull on out. So far so good, but it’s tough
Michael....there is a definite procedure to determine if the roughed bowl is ready to finish turn, and I may be on the extreme limits of that procedure. All roughed bowls are weighed monthly, and at the minimum, three months of unchanged weight is the standard in making that determination. Some bowls, I let it go to 4 months....and on rare occasions, it's five months. During the winter months, I tend to let that period extend, because the loss of moisture is slower then. Obviously, the summer months have the greatest speed of moisture loss.....and spring and fall are in-between. If a roughed bowl is harder and denser, like the Red Mallee you see here, I tend to let it slide a little more than something like domestic maple. If a roughed bowl has less then about 16% MC, I often do not use anchorseal during the seasoning process, so that plays into the decision to call the seasoning process good to go, as well. If there is any guess work involved, it revolves around the species of wood, the time of year, and whether it has an anchorseal coating. If there is one thing that really does improve the process, it's the knowledge that to season bowls to the best final result, then "time is your friend"....the longer you can wait, the more secure you are in guaranteeing a great final outcome.
-o-
So this how thick you leave your bowls for seasoning Odie?
Not usually, Russ. This example is a bit thicker than I usually go. This one will take longer to season, because of that. As you know, the standard for thickness of a roughed bowl is 10% of the diameter, and I routinely fudge that a little bit. I'd say I normally go about 12% of the diameter, or so.....but, I really don't bother with accuracy in measuring it.....I just make sure it's a little thicker than the normal 10% standard. Naturally, I have to wait longer for the seasoning process to finalize because of my beliefs on this.....but, as I said above, the longer I wait because the seasoning process is slowed down, the better the final result will be.
All of these things, means I have to have about 30-50 bowls in the seasoning process at any one given time.....and because of having this method for many years, I have a backlog of pre-seasoned bowls to choose from when I decide to throw one the lathe for the second turn. I never succumb to an overpowering desire to put a bowl on the lathe prematurely.
-o-