6 References

The information collected in the books on this site comes from a wide variety of sources, including guitar player blogs, luthier sites, technical sources, scientific sources, product sites and my personal background knowledge (human factors, perception, physics, physiology, performance, product engineering). Availability from the internet was preferred, but many scientific references are unfortunately still hidden behind pay walls, even many papers from the seventies and eighties. Publishers like Elsevier and Springer have been under fire from the universities and changed their business model to paid publishing rather than paid reading. More and more is published in open platforms like www.researchgate.net, sciencedirect, dx.doi.org, arXiv.org, university bound repositories and many other and can be browsed with Google Scholar or Academia.edu. Also the institutions where authors work or which are active in the same field often have full texts, downloadable from their own libraries. A particular versatile source is en.wikipedia.org. Where open access was found the links are provided. Hopefully, readers will consult these sources to shape their opinions on the discussed matters. However, this is not written as a scientific paper, since it was not attempted to collect and comment on all publications on each topic. Rather it was attempted to provide a coherent and versatile view on how the guitar works and what could be done to change its characteristics as desired.

In this field there are conflicting believes, among persons who present their personal experience or preference as evidence for their ideas. Providing all these as references would be confusing. References have been restricted to fairly robust ones and they are far from covering the whole literature. Most references are listed below, others may be found as links in the text. Where brands or product names are mentioned these can be best searched on the net, since links may get outdated.

In the text, many data from original work are given. These come from the calculation schemes developed for this project or from dedicated measurement series.

Articles, books and theses

• • • • • Ahmed, S.A. and S. Adamopoulos (2018). Acoustic properties of modified wood under different humid conditions and their relevance for musical instruments. Applied Acoustics 140, Pages 92-99. https://daneshyari.com/article/preview/7152060.pdf
        • Bader, R. (2005). Computational mechanics of the Classical Guitar. Springer Verlag Berlin Heidelberg New York
        • Bader, S. Crystic composites handbook. cn.scottbader.com/uploads/files/3381_crystic-handbook-dec-05.pdf
        • Bécache, E., Chaigne, A., Derveaux, D. and Joly, P. (2005). Numerical simulation of a guitar. Computers and structures, 83: 107–126
        • Beldie, I.P. (1965). Measurement of resonant frequencies of violin plates in the tuning process. Industria Lemnului, 16 (4): 141-147
        • Bismarck, G. von (1974). Sharpness as an attribute of the timbre of steady sounds. Acustica, 30: 159–172
        • Bismarck, G. von (1974). Timbre of steady sounds: A factorial investigation of its verbal attributes. Acustica, 30: 146–159
        • Boff, K.R., L. Kaufmann and J.P. Thomas Eds (1986). Handbook of Perception and Human Performance Vol 1. Sensory processes and perception. Wiley, NY
        • Boven, M.M.A. van (2017). Dynamic response optimization of an acoustic guitar. Master Thesis Delft University of Technology, research group Structural Optimization and Mechanics. https://repository.tudelft.nl/islandora/object/uuid:0126e698-df97-4313…/download
        • Bowyer, E.P. and V. Krylov (2014). Experimental investigation of damping flexural vibrations in glass fibre composite plates containing one- and two-dimensional acoustic black holes. Composite Structures Volume 107: 406–415
        • Caldersmith, G. (1978). Guitar as a reflex enclosure. Journal of the Acoustical Society of America, 63(5): 1566–1575
        • Caldersmith, G. W. and E. V. Jansson (1980). Frequency response and played tones of guitars. Quarterly Report STL-QPSR 4/1980 p 50–61, Department of Speech Technology and Music Acoustics, Royal Institute of Technology (KTH), Stockholm.
        • Castaldo, G. (2018). Experimental analysis and FEM simulation of vibrating plates and acoustic guitar soundboard. MS Thesis, Univ of Torino. https://www.academia.edu/36130463/EXPERIMENTAL_ANALYSIS_AND_FEM_SIMULATION_OF_VIBRATING_PLATES_AND_ACOUSTIC_GUITAR_SOUNDBOARD
        • Christensen, O (1983). An oscillator model for analysis of guitar sound pressure response. Proceedings SMAC 1983, Vol 2: 151-166. Also in Acustica (1984), 54: 289–295 http://www.speech.kth.se/music/smac83/SMAC83_Volume2.pdf
        • Christensen, O. and B.B. Vistisen (1980). Simple model for low-frequency guitar function. Journal of the Acoustical Society of America, 68(3): 758–766.  https://doi.org/10.1121/1.384814
        • Corum, J.M., L. Battiste, K.C. Liu and M.B. Ruggles (2000). Basic properties of reference cross ply carbon-fiber composite. Report ORNL/TM-2000/29, Oak Ridge National Laboratory. https://info.ornl.gov/sites/publications/Files/Pub57518.pdf
        • Crowe, D. and J. Youga (1986). Using Writing as a Tool for Learning Economics. The Journal of Economic Education, 17:3, 218-222, DOI: 1080/00220485.1986.10845169
        • Curtu, I., Stanciu, MD., Grimberg, R. and Savin, A. (2009). Experimental Research Regarding the Dynamic Behaviour of the Classical Guitar. Proceedings of the 10^th WSEAS International Conference on Acoustics & Music: Theory & Applications. Stevens Point, Wisconsin: 53-58 http://www.wseas.us/e-library/conferences/2009/prague/AMTA/AMTA07.pdf
        • Cuzzucoli, G. and Lombardo, V. (1999). A Physical Model of the Classical Guitar, Including the Player’s Touch. Computer Music Journal 83(2): 52-69.
        • Davis, E.B. (1990). On the structural and acoustic design of guitar soundboards. Thesis University of Washington. https://digital.lib.washington.edu/researchworks/handle/1773/7116
        • Derveaux, G., Chaigne, A., Joly, P. and Bécache, E. (2003). Time domain simulation of a guitar: Model and method (part 1). Journal of the Acoustical Society of America, 6(114): 3368–3383
        • Derveaux, G., Becache, E., Chaigne, A. and Joly, P. (2005). Numerical Simulation of a Guitar. Computers and Structures 83: 107-126
        • Dumond, P. and N. Baddour (2013). Can a brace be used to control the frequencies of a plate? Springerplus 2013; 2: 558, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3827644/
        • Dunnwald, H. (1991). Deduction of objective quality parameters on old and new violins. J. Catgut Acoust. Soc. 1(7), 2d Series: 1-5
        • Ehrlich, P. (1998). Tuning, Tonality, and Twenty-Two-Tone Temperament. Xenharmonikôn 17; http://lumma.org/tuning/erlich/erlich-decatonic.pdf
        • Elejabarrieta, M.J., Ezcurra, A. and Santamaria, C. (2000). Evolution of the vibrational behavior of a guitar soundboard along successive construction phases by means of the modal analysis technique. Journal of the Acoustical Society of America, 108 (1): 369–378; https://www.researchgate.net/publication/12396294_Evolution_of_the_vibrational_behavior_of_a_guitat_sounboard_along_successive_construction_phases_by_means_of_the_modal_analysis_technique
        • Elejabarrieta, M.J., Ezcurra and C. Santamarı́a (2002). Coupled modes of the resonance box of the guitar. J. Acoust. Soc. Am. 111: 2283; http://dx.doi.org/10.1121/1.1470163
        • Elejabarrieta, M.J., A. Ezcurra and C. Santamaría (2007). Resonance box of the guitar: structure-fluid interaction. 19^th International Congress on Acoustics, Madrid 2-7 September 2007. https://www.researchgate.net/publication/237403012_RESONANCE_BOX_OF_THE_GUITAR_STRUCTURE-FLUID_INTERACTION
        • Elie, B., F. Gautier, B. David and M. Curtit (2011). Analysis of bridge admittance of plucked string instruments in the high frequency range. Forum Acousticum 2011, Aalborg DK. https://hal.archives-ouvertes.fr/hal-00835970/document
        • Erickson, R. (1975). Sound Structure in Music. University of California Press, Berkeley and Los Angeles. ISBN 0-520-02376-5″>0-520-02376-5. https://books.google.nl/books?id=t3j6_ShXeWYC&redir_esc=y
        • Firth, I.M. (1977). Mechanical admittance measurements on the sound post of the violin and its action. Acustica, 36: 332–339
        • Firth, I.M. (1978). The action of the cello at the wolf tone. Acustica 39 (4): 252-263
        • Fitts, P.M. (1954). The information capacity of the human motor system in controlling the amplitude of movement. Journal of Experimental Psychology 47: 381–391.
        • Fletcher H. (1964). Normal Vibration Frequencies of a Stiff Piano String. J Ac Soc Am 36 (1): 203-209. http://www.jbsand.dk/div/StivStreng.pdf
        • Friederich, D, (2013). The classical guitar soundboards and their bracing, Orfeo Magazine May 2013, http://www.orfeomagazine.fr/documents/Soundboards_DF.pdf
        • Fréour, V., Mansour, C. Saitis and G. Scavone (2014). Evaluation and classification of steel string guitars using bridge admittances. Conference paper: International Symposium on Musical Acoustics (ISMA 2014), Le Mans, France. https://www.researchgate.net/publication/263658006_Evaluation_and_classification_of_steel_string_guitars_using_bridge_admittances
        • Fritz, C., Curtin, J. Poitevineau and F-C. Tao (2017). Listener evaluations of new and Old Italian violins. Proc Nat Ac Sc. http://www.pnas.org/content/early/2017/05/02/1619443114.abstract
        • Genani, G., J.F.M. Molenbroek and M. Dekker (2013). Design of an ergonomic electric guitar. https://www.researchgate.net/publication/245359989_Design_of_an_ergonomic_electric_guitar
        • Göken, J., S. Fayed, H. Schäfer and J. Enzenauer (2018). A study on the correlation between wood moisture and the damping behaviour of the tonewood Spruce. Acta Physica Polonica 133, 1241-1260. http://przyrbwn.icm.edu.pl/APP/PDF/133/app133z5p20.pdf
        • Gorniak, S.L., M. Duarte and L. Latash (2008). Do synergies improve accuracy? A study of speed-accuracy trade-offs during finger force production. Motor Control. 2008 Apr; 12(2): 151–172 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2579960/#R8
        • Gough, C.E. (1981). Theory of string resonances on musical instruments. Acustica, 49(2): 124–140
        • Green, D.W., E. Winandy and D.E. Kretschmann (1999). Wood handbook—Wood as an engineering material, Chapter 4: Mechanical Properties of Wood. Forest Products Laboratory Gen. Tech. Rep. FPL–GTR–113. Madison, WI: U.S. Department of Agriculture, Forest Service https://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/ch04.pdf
        • Grey, J.M. (1978). Timbre discrimination in musical patterns. Journal of the Acoustical Society of America, 2(64): 467–472
        • Gupta, R. and A. Sinha (2012). Effect of grain angle on shear strength of Douglas-fir wood. Holzforschung, 66, pp. 655–658. https://pdfs.semanticscholar.org/efc1/dc13a2efbc7489822357db471aaa281c79d5.pdf
        • Hess, D.P. (2000). Frequency Response Evaluation of Acoustic Guitar Modifications. Exp Mechs 40, 242-247. https://www.savartjournal.org/index.php/sj/article/view/19/pdf
        • Houtsma, A. J. M. (1982). Inharmonicity of wound guitar strings. Journal of Guitar Acoustics, (6), 60-64. https://pure.tue.nl/ws/files/4255418/734675.pdf
        • Hoyer and McInnes, Consumer behavior, Cengage Learning, 2008
        • Hutchins, C.M. (1998). A measurable effect of long-term playing on violin family instruments. Journal of the Catgut Acoustical Society, 3(5): 38–40.
        • Inta, R. (2007). The acoustics of the steel string guitar. PhD Thesis, the University of New South Wales, Sydney Australia https://www.researchgate.net/publication/266215639
        • Jansson, E. V. (2002a). Acoustics for Violin and Guitar Makers, 4^th Royal Institute of Technology, Stockholm. Chapter V: Applied Acoustics. Vibration properties of the wood and tuning of violin plates. http://www.speech.kth.se/music/acviguit4/part5.pdf
        • Jansson, E. V. (2002b). Acoustics for Violin and Guitar Makers, 4^th Royal Institute of Technology, Stockholm. Chapter VI: The Function, tone, and tonal quality of the guitar. http://www.speech.kth.se/music/acviguit4/part6.pdf
        • Järveläinen, H. and M. Karjalainen (2006). Perceptibility of inharmonicity in the acoustic guitar. Acta Acustica united with Acustica 92(5):842-847 (https://www.researchgate.net/publication/233604568_Perceptibility_of_Inharmonicity_in_the_Acoustic_Guitar)
        • Kaselouris, E., M. Bakaresos, M. Tatarakis, N.A. Papadogiannis and V. Dimitriou (2022). A review of finite element studies in string musical instruments. Acoustics 4: 183-202. https://doi.org/10.3390/acoustics4010012
        • Kasha, M. (1995). Designing and testing of new guitars by criteria of applied physics and psychoacoustics. Journal of the Acoustical Society of America, 97(5): 3355
        • Kerrick, J.S., D.C. Nagel,  and R.L. Bennett  (1969). Multiple ratings of sound stimuli. Journal of the Acoustical Society of America, 45: 1014-1017
        • Kirchhoff-Love theory of bending plates http://en.wikipedia.org/wiki/Bending_of_plates#Rectangular_Kirchhoff-Love_plates
        • Kobayashi, T., N. Wakatsuki and K. Mizutani (2010). Inharmonicity of Guitar String Vibration Influenced by Body Resonance and Fingering Position. Proceedings of the International Symposium on Music Acoustics, p 25-31, Sydney and Katoomba, Australia. http://isma2010.phys.unsw.edu.au/proceedings/papers/p41.pdf
        • Kolbrek, B. (2008). Horn Theory: An introduction, Part 1 and 2, AudioExpress. grc.com/acoustics/an-introduction-to-horn-theory.pdf.
        • Lai, J.C.S. and M.A. Burgess  (1990). Radiation efficiency of acoustic guitars. Journal of the Acoustical Society of America, 88(3): 1222–1227
        • Lee, N. and J.O. Smith III (2010). Virtual String Synthesis, Chapter 23: 417-45.In: Rossing, ed, The science of string instruments, Springer Verlag.
        • Lee, M.K., M.H. Fouladi and S.N. Namasivayam (2016). Mathematical modelling and acoustical analysis of classical guitars and their soundboards (Review article). Advances in Acoustics and Vibration Volume 2016, Article ID 6084230. http://dx.doi.org/10.1155/2016/6084230
        • Lichte, W.H. (1941). Attributes of complex tones. Journal of Experimental Psychology, 28: 455-480
        • Lindroos, N., H. Penttinen and V. Valimaki (2011). Parametric electric guitar synthesis. Computer Music Journal, DOI: 10.1162/COMJ_a_00066. file:///D:/Guitar/literatuur/Param-el-gtr-syn-Lindroos-2011.pdf
        • Mattei, P.-O. (2009). Spectrum of a fluid-loaded vibrating plate: the multiple resonance phenomenon. https://hal.archives-ouvertes.fr/hal-00366931/document
        • McGee, VE. (1964). Semantic components of the quality of processed speech. Journal of Speech and Hearing Research, 7: 310-323
        • Meinel, E. and E.V. Jansson (1991). On the influence of the neck on the guitar body vibrations. STL Quarterly Progress and Status Report Vol 32 (4) : 011-018. http://www.speech.kth.se/prod/publications/files/qpsr/1991/1991_32_4_011-018.pdf
        • Meyer, J. (1974). Die Abstimmung der Grundresonanzen von Gitarren. Das Musikinstrument 23: 179–186
        • Meyer, J. (1983). The function of the guitar body and its dependence upon constructional details. Publications of the Royal Swedish Academy of Music, 38: 77–100
        • Meyer, J. (1983). “Quality aspects of the guitar tone.” In Function, Construction, and Quality of the Guitar (E. V. Jansson ed.) Royal Swedish Academy of Music, Stockholm: 51–76.
        • Mottola, R.M. (2001). Constructing an Under Saddle Transducer http://liutaiomottola.com/PrevPubs/Piezo/CoaxTransducer.htm
        • Nia, H.T., D. Jain, Y. Liu, M-R. Alam, R. Barnas and N.C. Makris (2015). The evolution of air resonance power efficiency in the violin and its ancestors. Proc Math Phys Eng Sci. 471(2175)
        • Odegard, G.M., and A. Bandyopadhyay (2011). Physical aging of epoxy polymers and their composites. http://onlinelibrary.wiley.com/doi/10.1002/polb.22384/full
        • Oonuki, Y., K. Mizutani and N. Wakatsuki (2009). Estimation of Picked String Using Inharmonicity of Guitar Sound. Tech. Rep. Musical Acoustic. MA2009-57, pp. 63-66, cited by Kobayashi et al (2010).
        • Perry, I.A. (2014). Sound radiation measurements on guitars and other stringed musical measurements. PhD Thesis Cardiff University. https://core.ac.uk/download/pdf/42520927.pdf
        • Popp, J. and T. D. Rossing (1986). “Sound radiation from classical and folk guitars.” International Symposium on Musical Acoustics, West Hartford, Connecticut, July 20–23.
        • Popp, J.E. (2012). Four mass coupled oscillator guitar model. Journal of the Acoustical Society of America Volume 131 (1): 829-836. Earlier published in the Proc 160^th meeting Acoustical Soc Am, 2010, Vol 11, Cancun, Mexico https://doi.org/10.1121/1.3521072
        • Rahmani, H., H.M. Najafi and A. Ashori (2014). Mechanical performance of epoxy/carbon fiber laminated composites. Journal of Reinforced Plastics and Composites 33(8):733-740. (https://www.researchgate.net/publication/274447685_Mechanical_performance_of_epoxycarbon_fiber_laminated_composites
        • Rao, S.S. (2012) Mechanical vibrations (Fifth Ed), Prentice Hall https://aerocastle.files.wordpress.com/2012/10/mechanical_vibrations_5th-edition_s-s-rao.pdf
        • Richardson, B.E. (1982). A physical investigation into some factors affecting the musical performance of the guitar. PhD thesis, University of Wales https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257869
        • Richardson, B.E. and G.W. Roberts (1985). “The adjustment of mode frequencies in guitar: A study by means of holographic interferometry and finite element analysis.” Proceedings of SMAC 83. Royal Swedish Academy of Music, Stockholm: 285–302. http://www.speech.kth.se/music/smac83/SMAC83_Volume2.pdf
        • Ross, R.E. and Rossing, T.D. (1979). Plate vibrations and resonances of classical and folk guitars. Journal of the Acoustical Society of America, 65: S72A
        • Rossing, T.D., J. Popp, and D. Polstein (1983). Acoustical response of guitars. Proceedings of SMAC Vol II, 311-332. http://www.speech.kth.se/music/smac83/SMAC83_Volume2.pdf
        • Rossing, T.D. ed (2010): The science of string instruments. http://www.logosfoundation.org/kursus/The%20Science%20of%20String%20Instruments.pdf
        • Rossing, T.D. and G. Eban (1999). Normal modes of a radially braced guitar determined by electronic TV holography. Journal of the Acoustical Society of America, 106(5): 2991–2996
        • Rowell, R.M. and P. Konkol (1987). Treatments that Enhance Physical Properties of Wood. Gen. Tech. Rep. FPL-GTR-55. Forest Products Laboratory, Madison, WI. https://pdfs.semanticscholar.org/3748/017c6edb9235244634bcf85f6cdb7d5fb824.pdf
        • Russell, D. (1998) http://www.acs.psu.edu/drussell/guitars/hummingbird.html
        • Salajeghe, S., S.E. Khadem and M. Rasekh (2012). Nonlinear analysis of thermoelastic damping in axisymmetric vibration of micro circular thin-plate resonators.Applied Mathematical Modelling, Volume 36: 5991-6000.
        • Salomon, L.N. (1958). Semantic approach to the perception of complex sounds. Journal of the Acoustical Society of America, 30: 421-425
        • Sanchez Hubert, J. and E. Sanchez Palencia (1989). Vibration and Coupling of Continuous Systems; Asymptotic Methods. Springer-Verlag, Berlin Sold by Wiley
        • da Silva, M.R., J.O. Brito, J.S. Govone, G. de Oliveira Machado, C. Calil Jr, A.L..Christoforo and F.A.R. Lahr (2015). Chemical and Mechanical Properties Changes in Corymbia Citriodora Wood Submitted to Heat Treatment. Int J of Mat Eng 5(4): p 98-104 http://article.sapub.org/10.5923.j.ijme.20150504.04.html
        • Smith, D. (2005). A guide to musical instrument design for preschool children. Masters thesis Auburn Univ, Tx. https://pdfs.semanticscholar.org/9e7a/0484a6d8ed4021df15a87eba432f3a7c7b3a.pdf
        • Sproßmann, R., M. Zauer and A. Wagenführ (2017). Characterization of acoustic and mechanical properties of common tropical woods used in classical guitars. Results in Physics Volume 7, Pages 1737-1742 https://www.sciencedirect.com/science/article/pii/S2211379717302632
        • Stephens, H.P. (2015). The Effect of Finishes on the Vibration Properties of Spruce Guitar Soundboard Wood. Savart Journal Vol 1 (5), 1-18, http://www.savartjournal.org/index.php/sj/article/view/25/pdf
        • Stanciu, M.D., V. Bucur, V.M. Munteanu S.V. Georgescu and S.M. Năstac (2018). Moisture-induced deformation in the neck of a classical guitar. De Gruyter Vol 73, issue 4. https://doi.org/10.1515/hf-2018-0021
        • Stoykov, S. and S. Margenov (2016). Finite Element Method for Nonlinear Vibration Analysis of Plates. In Margenov et al. (eds.), Innovative Approaches and Solutions in Advanced Intelligent Systems, Studies in Computational Intelligence 648.https://docplayer.net/102346995-Finite-element-method-for-nonlinear-vibration-analysis-of-plates.html
        • Sumi, T. and T. Ono (2008). Classical guitar top board design by finite element method modal analysis based on acoustic measurements of guitars of different quality. Acoustical Science and Technology 29(6): 381-383
        • Timoshenko, S. and S. Woinowsky-Krieger (1959).Theory of Plates and Shells (2nd Edition). https://www.academia.edu/37205290/Theory_of_Plates_and_Shells_2nd_Edition_-_Timoshenko_and_S._Woinowsky-Krieger.pdf
        • Torres, J.A., de Icaza-Herrera and V.M. Castaño (2014). Guitar Acoustics Quality: Shift by Humidity Variations. Acta Acustica united with Acustica Vol. 100 (2014) 537 – 542. https://www.researchgate.net/publication/262882737_Guitar_Acoustics_Quality_Shift_by_Humidity_Variations/download
        • Woodhouse, J. (1996). On the playability of violins. Part I: reflection functions. Acustica 78: 125–136.
        • Wright, H.A.K. (1996). The Acoustics and Psychoacoustics of the Guitar. PhD thesis, University of Wales, Cardiff College. http://melator.com/wsb3688386501/resources/doctoral_thesis+about+the+acoustics+of+a+CL+guitar.pdf

• • • • The following is a selection of sources for applied knowledge:

• • • • Books on guitar design
      • Donald Brosnac (1978). An introduction to scientific guitar designWilliam Cumpiano, Jonathan Natelson and Clyde Herlitz (1994). Guitar making; Tradition and technology: A complete reference for the design and construction of the steel string folk guitar and the classical guitarRichard Mark French (2008). Engineering the Guitar: Theory and Practice

        Trevor Gore and Gerard Gilet (2016). Contemporary acoustic guitar design and build. Volume 1

        David Hurd (2004). Left brain lutherie

        G. Cuzzicoli and M. Garrone (2019). Classical Guitar Design. Springer.

• • • • Guitar building books
      • David Russell Young (1986). The steel string guitar; Construction and repairIrving Sloane (1990). Steel string guitar construction: Acoustic six-string, Twelve string and Archtop guitarsRoy Courtnall (1993). Making master guitarsIrving Sloane (1998). Classic guitar construction

        Jonathan Kinkead (2004). Build your own acoustic guitar

        Alex Willis (2006). Step-by-step guitar making

        Roger Siminoff (2007). The luthier’s handbook

        John Bogdanovich (2007). Classical guitar making; A modern approach to classical design

        Robert Benedetto (2008). Making an Archtop guitar

        Nick Blishen (2012). Acoustic guitar making; The steel string guitar

        Kathy Somerville (2014). Building a classical guitar with John Ressler

        Acoustic magazine (2014). The book of British guitar making

        Big Red Books (7 volumes, selection of articles from American Lutherie) www.luth.org.

         

• • • • Helpful sites
      • www.classicalguitardelcamp.com (versatile)www.mandolincafe.com (versatile)www.acousticguitarforum.com (versatile)

        www.mimf.com (versatile)

        www.luthiersforum.com (limited, materials market)

        www.buildyourguitar.com (links)

        www.luth.org (schools, organ of the Guild of Am Luthiers)

        www.frets.com (repair)

        www.fretnotguitarrepair.com (repair)

        Many ‘how to’ videos may be found on Youtube, also showing the complete process of guitar making from custom making up to guitar manufacturing plants.