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Karl Borum – Borum Acoustics replied to the discussion Spectrum analysis of Guitars in the forum Design and Testing 11 months ago
I’m about to join the club- my cheap microphone I bought a year ago doesn’t work with my laptop so I just ordered the UMIK-1 Omni-Directional USB mic in Giuliano’s book. In the meantime, I’ve run REW with my PC microphone, so not posting anything until I get the UMIK.
It looks like my peaks are all lower in frequency that the lower limit in…
Ian Davlin The Looth Group -
Paul M replied to the discussion Deflection vs. Frequency for measuring flexural modulus in the forum Design and Testing 11 months ago
Deflection vs. Frequency for measuring flexural modulus
I guess I don’t think that the minute differences in bracing stock are going to make measurable differences, ultimately I’m tuning the braces towards target frequencies and very importantly, target deflection which I think will likely account for the vast majority of these miniscule differences in tiny pieces of wood.
Ultimately I’m looking…
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Neil Miller replied to the discussion Deflection vs. Frequency for measuring flexural modulus in the forum Design and Testing 11 months ago
Deflection vs. Frequency for measuring flexural modulus
I’m not trying to push any one method, just trying to understand the options. The T. Gore books talk about both, so it seems reasonable that they should produce similar results. I’m curious to know if others have produced results similar to mine, or if perhaps I’m doing something wrong…
I will differ with you on the issue of brace…
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Karl Borum – Borum Acoustics replied to the discussion Black Grain Filler Under EM6000? in the forum Finish New Builds 11 months ago
Black Grain Filler Under EM6000?
The EM-6000 WB topcoat and EM1000 sealer finally arrived; let the testing begin….
I’ve made a number of test panels for black grain filler under EM-6000 top coat and over Silver Tip Epoxy grain filler (including Michael Bashkin’s suggestion). I am going to update this thread with the results as the panels are completed. Materials are listed…
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Jorge Rodríguez Spiral Sun Guitars replied to the discussion New dreadnought in the forum Share Your New Builds Content 11 months ago
Yes, the bridge, bindings and headplate are made of padouk. They say that padouk turns dark brown with time… But I really like the look of It now. It’s a very light bridge as well.
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Ian Davlin The Looth Group replied to the discussion New dreadnought in the forum Share Your New Builds Content 11 months ago
What is the bridge made out of ? It’s really poppin’.
Paul M -
Dan Horn Treeline replied to the discussion New dreadnought in the forum Share Your New Builds Content 11 months ago
That’s a beauty. Nice work!
Paul M -
Paul M replied to the discussion Deflection vs. Frequency for measuring flexural modulus in the forum Design and Testing 11 months ago
Deflection vs. Frequency for measuring flexural modulus
I’m not super smart and all of this is on the outer edge of my ability to understand things, but for me, Guiliano’s methods are the ones that are most approachable to me and additionally he’s been exceptionally helpful in talking to luthiers here and elsewhere.
For that reason I’m sticking with his methods and not worrying about anything else. …
Ben Gormly Amateur builder -
Ben Gormly Amateur builder replied to the discussion New Tenor Ukulele in the forum Share Your New Builds Content 11 months ago
Thank you!
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Neil Miller replied to the discussion Deflection vs. Frequency for measuring flexural modulus in the forum Design and Testing 11 months ago
Deflection vs. Frequency for measuring flexural modulus
I didn’t repeat the test. When you say you find deflection is less “reliable” what standard are you using? Do you mean less “repeatable” or is there another standard against which to measure them? These same tops were tested by Pacific Rim Tonewoods, and I found a similar (weak) correlation between theirs and my deflection-based E,…
Ben Gormly Amateur builder - Load More