Finally got together pics of my third try at threading, this one an Ebony box about 2.5" in diameter.
For this one I turned the outside and hollowed almost to final dimensions, then let both the bottom and lid sit a few days in case there was any residual moisture or stress in the wood before final turning and threading. Baxter jig.
The Baxter jig makes it easy. I have it mounted on a second lathe so I can turn on one lathe and thread on the other without disturbing the threading setup. The jig makes the threading trivial; the hard part for me is getting the dimensions right.
I think I posted this picture earlier of this box along with the first two threading tries. The one on the left is my first. No finish on these - just a bit of buffing/polishing the bare wood. Several people asked me where I got those plastic lids. Ha!
I see I got a little light leakage making a blue shadow on these. Must be from the one light in the room I forgot to turn off, a small gooseneck lamp at the sharpening station about 10' away. Doesn't take much!
JKJ