Australian/New Zealand Luthiers Forum

Well, after some trial and error, I got some results! Using numbers from the book and the threads you pointed out, I was able to come close to your target thickness for Englemann #1, so I think my equations work. However, 2.3mm for a back seems a leeeeetle too thin. So perhaps my frequency measureme...

Ok, rereading, I realize the formula I'm looking for is 4.5-7. One confusion I have is what is the variable "p"(square root) in the top line?

Elong/Ecross? Density?

I think I'm understanding the rest.

Thanks!

Hello all! Quick question (hah) - how would you interpret these results? Do they make sense? I'm tapping the back panels for a new guitar. They are slightly figured walnut, 4mm thick, 217mm x 605mm, mass 297g. If I had to guess, I'd read the results: fL = 38 fC = 98 fLC = 52 It seems like this rough...

Hi Martin, thanks so much for your response! The side weights are attached per Gore/Gilet - I think they're pretty solid. I'm guessing my top is not very responsive - it's a standard X-brace and if I had to guess, I'd say it's a little over-built. I didn't lock in any of the lower braces, so that mi...

Hi Trevor, so great of you to respond, thanks so much! I don't have a Chladni rig built, but I'm looking into that. Attached is the back tapping that I did. Also some pictures of the bracing. The top is standard X bracing, but the lower braces are short of the sides (not glued in). Looks like I don'...

Hello everyone! I just finished construction of a Spalted Maple Jumbo with X-bracing and a live back. It's my second build, so I'm kind of fumbling through at this point. I was fortunate enough to take a class with Trevor in Denver so I've gotten the bug to try and add some Gore-like touches (live b...