Australian/New Zealand Luthiers Forum

Are you able to advise what is the background behind choosing the soundhole diameter of 89mm? Hi Wayne. Yeah it's in an effort to keep the helmholtz freq as low as practically possible. I was looking at other folks' parlour builds and seeing 115-125Hz. I've built one before myself and ended up with...

Bit of progress made last weekend. Glued and carved the X-brace and made the rosette. Finger braces/tone bars/whathaveyou glued up.

White oak looks very pretty. Is it heavy?

I think it should look nice too. I know the light sides/back isn't everyone's cup of tea but it'll be a good experiment at the very least.

It's definitely on the denser side. Measured at 930kg/m3 so a good ~20% more than Indian rosewood.

I ask because shaping bracing to fit the dish radius is a bit tricky without trimming to final back shape. I radiused all of the braces beforehand - I have a jig for this (I think similar to the one shown in the books, IIRC). Everything glued up in the radius dish with go-bar deck. One question.......

Progress so far. Have to finish shaping the back braces and then moving on momentarily. Sides bent last weekend (this oak bends so easily, btw). Will be doing laminated kerfing so that'll be next.

Certainly! Will post some pictures soon. Almost done with back bracing.

Hi all, Started a new build recently, my third acoustic guitar and 9th overall (I think... if you count a banjo). This will be my first time stepping away from following plans and templates and into the method outlined in the Gore/Gilet books. My background is in engineering so this approach excites...

You might find this Master's thesis interesting. The author creates a new composite material for acoustic guitars using carbon-fiber filament, polyethylene tape, aluminum strips, and polyurethane foam, which he claims matches the mechanical and tonal qualities of Sitka Spruce. He has a spectrum ana...

Semmens Guitars wrote: ↑

Tue Jun 08, 2021 5:37 pm

I have made a few double tops with no braces. I will tap test them and post the pics for you.

Much appreciated!

Hi all, I've been doing a bit of reading on carbon fibre guitars (rainsong in particular) and I've heard a lot of terms used to describe the sound, but I couldn't find anybody that had conducted any kind of modal analysis/frequency response. I read the builder's website (below) where he describes hi...

Thanks all, that's helpful. Finding a distinct single note tone can definitely be tricky but it's an interesting experiment. Very cool results.

I don't have any idea how to do it, but it seems filtering out the frequencies of know musical notes might be a place to star. Or, perhaps set filters that'll only let frequencies pass in the ranges your interested in, minus the musical notes (I'm assuming the instrument doesn't have a natural reso...

Hi all, Quick introduction - I'm a luthier by hobby and engineer by profession. I read Trevor's books a few months ago and have been doing a lot of thinking. I watched a video of Kenny Smith playing Norman Blake's D-18H a short while ago and though "WOW, I want to build THAT". And that got me thinki...