A guitar technician (or 'guitar tech') is a member of a music ensemble's road crew who maintains and sets up the musical equipment for one or more guitarists during a concert tour.uitar techs learn their craft either on the job, by working in a range of music, sound engineering, and instrument repair jobs; by completing a guitar repair program at a college or lutherie school; or from a combination of these two routes.
Common causes of pain in the big toe include gout, a bunion, a claw toe, an ingrown toenail and a turf toe, according to WebMD. Osteoarthritis of the big toe is another common cause of pain in the big toe, notes Healthline. Keep Learning.
1 Angling the sides of the nail can encourage the nail to grow into the skin. 2  irregular, curved toenails. 3  footwear that places a lot of pressure on the big toes: Pressure can be from shoes that are too tight, narrow, or flat for your feet. 4  Socks and stockings that are too tight can also lead to ingrown toenails.