42 awg magnet wire, heavy formvar enamel winding gutiar pickup wire

Formvar or HF:

This is one tough form of insulation. This wire insulation type is sold with one of two different film thicknesses: .0002 = normal & .0004″ = heavy. I feel like I almost never encounter the single build formvar insulated wire. Formvar wire is known most of all as being very tough. I feel that it is a little less consistent in film thickness when compared to poly, but it is much more durable. Some of the most famous pickups ever made were wound with .0004″ heavy formvar wire. A solid choice for rewinds and clones of single coil pickups. can also help to produce a big and clear sounding neck humbucker.