Guitar building courses, custom guitar builds and stringed instrument repairs based in Barnsley, Yorkshire. With many years of experience and time working with some of the best guitar builders in the country, luthier Martin Harmer delivers the highest quality craftsmanship and offers in-depth instruction on guitar building.

Want to know more about Martin and Electric Trees

About Martin

Guitar Building Courses

Learn how to build your own guitar with the instruction of an experienced luthier. We offer both one-to-one and group courses on all aspects of guitar building. Our courses are available at all proficiency levels, so whether you’re a master craftsman honing a new skill or you’ve never set foot in a workshop, our tailored courses will feel just right.

Custom Pickups

Have you ever wanted your very own Custom Spec Pickups??? Here at Electric Trees we will sit down with you and design the perfect pickup for you and you desired sound.

When you're happy we can begin the process or if you feel confident you can wind them yourself.

Excellent service. Cheerful , skilful, and efficient. Martin has exciting plans for the future too, and he deserves success. I'd definitely recommend him


Brilliant place! Went in to get my Output Jack fixed. The guy was really quick, and took the time to explain everything to me and teach me how to do it myself in future. I also got my strings changed at the same time! Would highly recommend! Great price too!


Had my Yamaha cpx1200 repaired which had two large holes in the back of the acoustic guitar. Martin hard work craftsmanship is out of this world. I had visited many luthier's who would not take on the repair and the cost does not reflect the quality of repair that has been completed.

Paul Stevens