
Hrmm
Have you tried either Hide and Collar or Accolade leather?
As far as i am aware, pigskin although strong is very thin, at least i dont seem to be able to buy it in the right weight to make collars from. I and i know at least Hide and Collar, LINE collars with pigskin if requested to do so.
What sort of collar exactly are you after? Im presuming a rolled leather show lead......
Em