There is always some amount of useful information that is subject to change frequently. Inclusion of such information in a printed book means that this information quickly becomes out of date. In this book all such information is put in an online annex that is referenced by the printed book. In this way the information can be kept up to date.

Note to commercial suppliers of instrument plans: Want to see your offerings listed here or change the blurb I have here for you? Contact me.

Last updated: June 14, 2025

Known errors in the text of the book are listed here by edition and by page. If an error is found in the book please send me email and let me know about it so I can inform other readers by listing it here, and fix the error in a subsequent edition of the book.

First Edition

Page xvi, column 2, line 6: Add: "Graphs were produced using Veusz – a scientific plotting package, by Jeremy Sanders."

To make use of the brace scaling techniques described in the book requires a plan for one of the conventional guitars that contains brace dimensions. I have a couple of plans available for free download on this site. Here are some others you may be interested in.

"Parlor" guitar (12 fret)

A lot of different Romantic period guitars will approximately fit the parlor guitar initialization provided by "G" Thang, and there are some small bodied 20^th century guitars that fit the bill as well.

The Guild of American Luthiers has a nice plan for a Mid-19th Century Martin Guitar (Plan #57) available on their site.

Classical guitar (12 fret)

Note that most classical guitars are approximately the same size, so most any plan you get will work fine.

There is one you can download from this site for free. Go to this page and scroll down to download the plan.

The Guild of American Luthiers has a nice collection of classical guitar plans available on their site.

OM guitar (12 fret)

GenOne Luthier Supply has a nice 12 fret OM plan available on their site.

OM guitar (14 fret)

This is one you can download from this site for free. It is one of the example instruments in my book Building the Steel String Acoustic Guitar. Go to this page and scroll down to download the plan.

Dreadnought guitar (14 fret)

This is one you can download from this site for free. It is one of the example instruments in my book Building the Steel String Acoustic Guitar. Go to this page and scroll down to download the plan.

Jumbo guitar (14 fret)

GenOne Luthier Supply has a nice 14 fret J-200 style jumbo guitar plan available on their site.