Search found 6 matches

by TomBeltran
Tue Mar 19, 2024 2:44 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Spreadsheets
Replies: 3
Views: 519

Re: Spreadsheets

I decided to combine these into one big spreadsheet file with 20 worksheets, and create connections between them, so when you change one worksheet it affects others. In essence, I've tried to create a complete acoustic guitar model. How accurately this predicts acoustic function is yet to be seen. ...
by TomBeltran
Wed Feb 08, 2023 4:22 pm
Forum: Instrument Builders Forum
Topic: Shape of Braces - Is conical cross-section the best shape?
Replies: 13
Views: 6882

Re: Shape of Braces - Is conical cross-section the best shape?

On youtube, there is a video called "Guitar Physics and the i-beam bracing," which shows the construction of the I-Brace, using a router. It is at the 16 minute mark. I had heard somewhere that Mossman had changed from the I-Beam brace to holes in the braces to lighten them. A few builders are doing...
by TomBeltran
Tue Feb 07, 2023 3:09 am
Forum: Instrument Builders Forum
Topic: Shape of Braces - Is conical cross-section the best shape?
Replies: 13
Views: 6882

Re: Shape of Braces - Is conical cross-section the best shape?

In principal you are correct that an I beam shape should be useful. However when you look at the dimensions in practice it is simply not practical to make in timber. Stuart Mossman, in the later 1970's used an I-Beam construction in his steel string guitars that was very well regarded. You might be...
by TomBeltran
Fri Jan 14, 2022 4:24 am
Forum: Instrument Builders Forum
Topic: vacuum press
Replies: 10
Views: 7227

Re: vacuum press

VacuumClampingFixture.pdf Happy new year all. I use a vacuum bag for a few jobs but I'd really rather like one of those press frames that open and shut like a suitcase. Anyone got one or made one? I have built one, the plans are attached. Also, here is a little background, some tips on building the...
by TomBeltran
Sun Sep 19, 2021 4:01 pm
Forum: Instrument Builders Forum
Topic: Inside mould
Replies: 5
Views: 6621

Re: Inside mould

Ignacio Fleta, who started as a violin builder, used an inside mold to build guitars. There is a video available from Arts On Film, of him building a guitar and it shows his use of an inside mold.
by TomBeltran
Sun Nov 17, 2019 2:50 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Design Book
Replies: 1
Views: 5435

Design Book

This is probably old news to those on this group and guitar builders everywhere, but I just finished reading the Design book, and it is not only incredibly interesting (except I'm only good for a page of equations before my eyes glaze over) it is truly impressive, and very practical. Over the years,...