Hey Tracy, for a stave I'd most likely try a sealed capped 3" or 4" PVC pipe. Right now I've got a large block I cut from a sycamore to use as spliced in levers on a molle. Just took it out of the alcohol bath and it's drying now. I did a test run on a cross cut sliver and it looks like it did a good job stopping the checks from happening. I'll give a stave a go some time and post some results as well. I have 7 gallons or so of alcohol on hand, caught them for half price a few months ago at menards and stocked up. I might try cutting an Osage branch stripping the bark and soaking it just to test.
Kip