josh homme, don't tell us, what type of guitar amps, o pedal he use. but he turn down all guitar y C. so in C with a non baritone guitar normally the strings are 0.13. in some guitar 0.12 can use to.
i hope my answer helps you.
sorry for my English, im from Argentina and don't know how to write it
-UPDATE-
When he was in Queens of the Stone Age (up to Lullabies to Paralyze), he was listed as using Dean Markleys, but since Era Vulgaris and his career in Them Crooked Vultures he says that his guitar technician shifted him to Jim Dunlops. =)
Nylon - it is a classical guitar.
It is down to personal preference as to which strings are best for an archtop guitar. Chromes and flatwound strings are both popular. Light gauge strings are preferable as they put less pressure on the neck.
String cheese, Sock string
6-12 depending on the kind or 69 if ur awsome
Ernie Ball Regular Slinky's
Nylon - it is a classical guitar.
There are guitar strings for nearly every pitch or resonance, and even some made out of horse hair like violin strings.
sound energy i believe
Nylon strings.
It is down to personal preference as to which strings are best for an archtop guitar. Chromes and flatwound strings are both popular. Light gauge strings are preferable as they put less pressure on the neck.
Ernie ball. rottosound fender.
purple steel from the rocky mountains
This is kind of a broad question. Some guitar strings are nylon (classical guitar) or steel (acoustic). For standard tuning, from top to bottom the strings are E A D G B E.
It is not bad for the guitar, but the capo will be kind of useless as it won't be fretting the strings properly.
String cheese, Sock string
it has 6 or 12
6-12 depending on the kind or 69 if ur awsome