Being the age I am and having delt with a lot of vendors who like to use that
title "Master" I found that the number of years and experience a person has on one job, regardless what it is usually, determines when they can call themselves Masters. Some never consider the quality of workmenship they put out, they just assumn that sence they have been at something for X number of years it makes them a Master at it.

I am a retired S/S welder with 45 years experience and I don't ever remember once refering to my self as a "Master". I was Very Good at what I did, don't get me wrong, but I know a lot of others that were "Better".

To me anyone who can make a Kilt of extreem excellant quality should be called a "Master", but that is only my opinion, with that said I will put my soap box away.