Bill Neff wrote on May 25
th, 2018 at 9:19am:
Earlier this year I made one of the Craft Supplies rings with the metal core. I used Osage Orange for it's durability & color. Pretty easy to turn. I used epoxy to hold the wood to the core. The wood cracked after a couple of months. I don't know if it was the wood (since OO tends to crack) or if expansion differences between the metal and wood caused it.
Bill Neff wrote on May 26
th, 2018 at 9:50am:
The Osage Orange was very dry, had been sitting in my workshop for 6-7 years. It was 2x2x6 blank. A hair more clearance might help.
With this info, IMO
It's still the wood, nothing else.
The stainless steel core is stable.
The epoxy is 'typically " stable
The wood, that's another story.
OO has it's own characteristics like any other species but is not really prone to shrinkage.
OO is actually quite stable and somewhat elastic (used for archery bows) and because of this has a wide range of uses.
You mentioned that your blank was 2"x2"x6", while this is considered small, the interior wood can have significantly higher MC than the exterior (especially if sealed).
I have some (sealed) wood blanks of that size which are far older and are still soaking wet in the center.
In a perfect world
Wood should be milled close to final dimension leaving enough material for final dimensioning and sanding. Then left to acclimate to your working environment for at least a day before final fitting and adhesive is applied.
If the wood is not "stable" or at least as stable as you can get it before you fit it onto the steel, it doesn't really matter what else you do.
Wood Moves