The following book represents the extensive notes and knowledge acquired by John Mark during his time at GRD. Click here to read the GRD story. The book below has been transcribed and by Robbie Caballero to reflect the same text and writing style of the original document. All images are digital recreations, traced from the original hand drawings in the manuscript. The book is free to download, read, print, use, and enjoy. We ask that you give credit where credit is due. Many of the concepts in the book will be used in the company and there are more still that are being created for the first time in the industry. Some information is common knowledge, but keep in mind this is a record of John Mark’s studies and insights while studying with Charles Fox. We hope you are successful in your luthier ventures.
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