Search found 13 matches

by jfmckenna
Sat Nov 09, 2019 10:40 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Bridge Rotation at 2.3deg
Replies: 15
Views: 5681

Re: Bridge Rotation at 2.3deg

The green is the live value and the red is the peak value since the last refresh. So once you start the app the green line is dynamically moving with every sound that it hears then you punch the top of the guitar and it records the peak red value. So when you take the screenshot of it the live green...
by jfmckenna
Sat Nov 09, 2019 2:49 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Bridge Rotation at 2.3deg
Replies: 15
Views: 5681

Re: Bridge Rotation at 2.3deg

Well silly me I didn't make a frequency response chart before but I did just make one after. Method for doing so is to hold the guitar in the playing position but keeping the back free. Guitar is strung up to tension with felt under the strings to mute them. Using an App called Spectrum Analyzer on ...
by jfmckenna
Wed Nov 06, 2019 12:59 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Bridge Rotation at 2.3deg
Replies: 15
Views: 5681

Re: Bridge Rotation at 2.3deg

Just thought I would follow up with my results on this for anyone reading in the future. One thing for sure if you want to build guitars on the edge of responsiveness you have to be willing to "fix" them when they are brand new. And using bolt on necks systems and reversible glues help a lot in that...
by jfmckenna
Sat Oct 26, 2019 5:32 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Bridge Rotation at 2.3deg
Replies: 15
Views: 5681

Re: Bridge Rotation at 2.3deg

Can you not sand or file somehow the carbon fiber? If anything what I learned, or should say learned again because I used to always do this, is to aim high that way you can always remove material to get the tone you want. In fact I just did that on an 000 I built about a year ago, shaved the braces,...
by jfmckenna
Sat Oct 26, 2019 12:10 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Bridge Rotation at 2.3deg
Replies: 15
Views: 5681

Re: Bridge Rotation at 2.3deg

Appreciate the detailed response Trevor, many thanks. Yes this is traditional x-brace, no carbon, and the string height is 1/2in which is more or less 12-13mm so I could probably get away with lowering it a hair. I may just reset the neck angle instead of refretting too since it's so slight I probab...
by jfmckenna
Thu Oct 24, 2019 1:30 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Bridge Rotation at 2.3deg
Replies: 15
Views: 5681

Bridge Rotation at 2.3deg

This is a very small 12-fret parlor guitar. I am happy with the tone of it however there is quite a visible telegraphing or ghosting, if you will, of the bracing in front of he bridge. The distortion in the top is apparent in the right lighting and is seen to make a triangular depression with the x-...
by jfmckenna
Tue Jul 02, 2019 4:16 am
Forum: Instrument Builders Forum
Topic: StewMax Membership and Free Shipping
Replies: 6
Views: 2956

Re: StewMax Membership and Free Shipping

I'm going on my second year with it now. It pays for itself fast. This year I have not taken much advantage of it but if you plan on ordering even 3 or 4 times a year it at least pays for itself and then if you forgot to order that jack plate or something you just order it and don't worry about it.
by jfmckenna
Sat Jun 29, 2019 12:27 am
Forum: Instrument Builders Forum
Topic: Ivoroid
Replies: 6
Views: 2507

Re: Ivoroid

awesome thanks for the replies, that archtop looks marvelous! And I love the colour of amber shellac so I'm not to worried about that. your polishing looks great by the way. also how do you go about putting a wash coat on? Wash coat might not be the right terminology since that commonly is used to ...
by jfmckenna
Fri Jun 28, 2019 3:45 am
Forum: Instrument Builders Forum
Topic: Ivoroid
Replies: 6
Views: 2507

Re: Ivoroid

I'm finishing these two up right now in French Polish and it sticks just fine. I am using a dark amber button shellac so it does change the color considerably so that might be something to consider. I think it looks good but you may not. BUt otherwise Shellac sticks to everything well. Also don't fo...
by jfmckenna
Tue Jun 18, 2019 2:03 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Gore method/Tap tune/Siminoff...help!
Replies: 13
Views: 5790

Re: Gore method/Tap tune/Siminoff...help!

If you already have a computer and a microphone then it's really not that complicated. The first book is really a text book and almost deserves an actual class taught by a professor over the course of a college semester. But you don't really need to understand it in order to use it. There are alread...
by jfmckenna
Tue Jun 18, 2019 1:46 am
Forum: Instrument Builders Forum
Topic: Shell 'toxicity'
Replies: 3
Views: 1615

Re: Shell 'toxicity'

Yeah I've always heard that too. Interesting. I can imagine in an industrial setting it could cause something like silicosis which is not from a toxin but from the particles of dust themselves. So in any case dust control would be very important as it should be for anything.
by jfmckenna
Wed Feb 27, 2019 1:17 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: First Attempts: Finding Target Thickness with Acoustics
Replies: 2
Views: 3546

Re: First Attempts: Finding Target Thickness with Acoustics

Thank you Trevor. I really appreciate the response and your time.

Regards.
by jfmckenna
Thu Feb 14, 2019 3:16 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: First Attempts: Finding Target Thickness with Acoustics
Replies: 2
Views: 3546

First Attempts: Finding Target Thickness with Acoustics

First of all, hello down there in Oz and NZ and of course to the rest of you. I hear it's awfully hot down there this time of year. My first post here while I imagine most of you down under are still asleep! Hello from Virginia USA. I spend most of my time on the OLF but I found out that this place ...