the BONEYARD

The Boneyard is a repair shop specializing in trombone repair started in 1995 by bass trombonist John Sandhagen.  John has a BA in Music from Cal State Los Angeles and is a retired Instrument Repair technician working for Cal Poly Pomona for over 23 years. If you would like to make an appointment to have your instrument repaired please contact us by e-mail or phone. 

If you are not familiar with John's work and your first contact with us is online: We'd be happy to hear from you! Please let us know what your needs and questions are, we will be more than happy to help.

Don't forget to check out our Facebook page for news, photos and other information!