On this sculpt however I decided not to as the armature can get in the way of say working on putting detail with modelling tools onto you sculpts back, I prefer to be able to handle and turn what I'm working on as much as possible before any detail goes on. When you've hardened the sculpt you can machine/file away any exposed wire and fill in with 'Milliput - silver grey' which you will see on later pics as white where i have used it.