The book "Geigenlacke" by Josef and Reiner Hammerl is a well-established standard work for violin makers, restorers, and varnishing experts in musical instrument construction. It combines practical craftsmanship knowledge with scientific fundamentals and decades of workshop experience from the company Hammerl GmbH & Co. KG, one of the leading manufacturers of violin varnishes based in Germany. Below is a detailed description of the book’s structure and content: 1. Natural Resins Shellac, Dammar, Copal, Sandarac, Elemi, Amber Properties such as gloss, hardness, drying, and sound Selection depending on varnish type and desired sound 2. Natural Coloring Agents Plant-based dyes: Madder, Turmeric, Sandalwood Animal-based dyes: Cochineal Methods for extraction, fixation, and lightfastness 3. Various Essential Oils and Balsams Effects as plasticizers, gloss enhancers, and processing aids Examples and applications in the varnishing process 4. Natural Glues Hide, bone, and fish glues Properties: viscosity, effect on sound, processing Use on top plates, ribs, back plates, and restoration 5. Instructions for Wood Treatment & Varnishing Preparation: wetting, sanding, priming Varnish layering: colored and clear layers with spirit and oil varnishes Intermediate sanding, brush selection, drying times Impact on appearance and sound 6. Finished Products from Hammerl Spirit and oil varnishes, color extracts, complete sets Application instructions and compatibility Suitable for workshops and training Conclusion "Geigenlacke" by Hammerl is a compact professional book that deeply illuminates the theory and practice of varnish production and application in violin making. Especially valuable are the practical tips based on decades of experience. It is aimed at both traditional violin makers and modern restorers who want to work with high-quality natural materials.

The book "Violin Varnishes" by Josef and Reiner Hammerl is a well-established standard work for violin makers, restorers, and varnishing experts in musical instrument construction. It combines practical craftsmanship knowledge with scientific fundamentals and decades of workshop experience from the company Hammerl GmbH & Co. KG, one of the leading manufacturers of violin varnishes based in Germany. Below is a detailed description of the book’s structure and content: 1. Natural Resins Shellac, Dammar, Copal, Sandarac, Elemi, Amber Properties such as gloss, hardness, drying, and sound Selection depending on varnish type and desired sound 2. Natural Coloring Agents Plant-based dyes: Madder, Turmeric, Sandalwood Animal-based dyes: Cochineal Methods for extraction, fixation, and lightfastness 3. Various Essential Oils and Balsams Effects as plasticizers, gloss enhancers, and processing aids Examples and applications in the varnishing process 4. Natural Glues Hide, bone, and fish glues Properties: viscosity, effect on sound, processing Use on top plates, ribs, back plates, and restoration 5. Instructions for Wood Treatment & Varnishing Preparation: wetting, sanding, priming Varnish layering: colored and clear layers with spirit and oil varnishes Intermediate sanding, brush selection, drying times Impact on appearance and sound 6. Finished Products from Hammerl Spirit and oil varnishes, color extracts, complete sets Application instructions and compatibility Suitable for workshops and training Conclusion "Violin Varnishes" by Hammerl is a compact professional book that deeply illuminates the theory and practice of varnish production and application in violin making. Especially valuable are the practical tips based on decades of experience. It is aimed at both traditional violin makers and modern restorers who want to work with high-quality natural materials.