Related: Is there any evidence to support the benefits of lunar planting? (LINK)
A couple years ago, I first ran across something called "moon wood," described as follows (SOURCE):
Moonwood has recently received a good revival among the guitar community and scientists... Moonspruce is simply a name for spruce that was harvested and handled according to a century-old tradition from the Alp-regions in Europe. Carpenters and luthiers had recognized that wood that was cut under certain conditions, differs from wood that is not cut using the old traditional way of handling.
[It is] Cut an according tree within the last quarter of waning moon (end of waning moon phase) in the wintertime after the growing period of the tree has stopped (low sap flow).
THIS site also gives some characteristics and claims evidence supports these desirable qualities:
- The amalgam of the data material... and the use of specific, statistic-based analysis allow for a determination of significant...lunar oriented components in the variability of moisture loss, shrinkage and relative weight.
- It was determined that the division waxing...and waning...points to significant, across-the-board differences in shrinkage, but final results are still outstanding.
- ...The inclusion of the reference weight (taken before felling)of each individual tree, independent of time, shows that this factor plays a superordinate role, but confirms the significance of the lunar models tested.
There are also allegations that Stradivarius used "moon woods" to accomplish the legendary sound of his violins (mentioned in the source above as well as HERE as "legend has it" in a forum).
There are guitars sold today boasting "moon harvested spruce" as a selling point (EXAMPLE.
- Is there any evidence to support the superior qualities (either inherent qualities such as moisture retention, shrinkage, stiffness, etc. or end-product qualities such as sustain, complexity of tone, frequency profile, resonance, etc.) of moon-harvested woods used in musical instruments?
- Is there any evidence to support the claim that this is an "age-old" tradition used for many centuries? I ask as sources above discuss this as sort of following the wisdom of the "ancient experts" -- I'm wondering if it was completely fabricated more recently and just stuck because people tend to be fascinated with "the moon" and celestial influences on things.