You may be right…….do you think a dark color shaft, like Tsunami, has less moisture from being roasted longer?
Generally moisture is reintroduced in the process of torrefication that typically is 3-4% or the shaft is too brittle.
The cue makers I located that are capable of building a heavy flat faced KW shaft took me months searching to find
any that didn’t add weight to the shaft so many other builders told me they needed to do to meet my specifications.
So maybe skor has brought up something that explains how this gets done but Jim told me the only thing he has to
do is start with a suitably heavy blank that he meticulously weighs and segregates by categorization in his inventory.
Perhaps SCDiver2112, who’s conquered building 4 oz. KW shafts, can comment since he actually builds cue shafts.
All I know is Jim and 2 other cue builders told me it is not difficult at all when you select a suitable heavy weight blank.