I guessed at the cross-grain for the koa since it's already joined. I'd love to know if my guesstimate is reflective of your experience with it.
The guitars I gravitate towards usually have tops in the .095-.085" range. Likewise, my "best" guitars have been in the low .090's as well. I've wondered if 75 would be too high of a variable for f for the type of sound I enjoy, but it seems like f75 or f75 should do the trick for what I like to get out of the tone.
What was most surprising were the results I got from the cedar. The cedar tops I have are about 30 years old. When I picked them up from a sale on the OLF, I wasn't expecting them to be so extraordinary, but they ring like bells and feel as stiff as can be. The data backs up my intuition.
My next step is to join the sitka tops and thin them down. I want to get deflection results for each f value to see how (if) they correlate. They're lower grade tops I ordered specifically for testing.
Measurements
