Scottish Photographic Federation
Founded in 1903, the Scottish Photographic Federation (SPF) is a non-profit-making body which includes in its objects the discovery, promotion and protection of amateur photography throughout Scotland, and is the only body recognized by international agencies as representing the interests of Scottish Camera Clubs on a national basis. Most Scottish Camera Clubs are affiliated to the SPF and thus participate together, and against each other, in inter-Club, National and International Competitions.
I'm not a stencil artist but a silversmith. I have several of the 1" brushes, and they are perfect for sweeping my bench. I use the brushes to sweep the silver and gold filings off my bench, and they do a superb job of cleaning loose metal bits off my projects. I don't like to use any other brushes. I use the smaller ones ( the 1/2" and 3/8") for gently cleaning wax models and jewelry in progress. These brushes have greater control, stiffness and yet pliable bristles that does the job very well. I'm sticking with these brushes for a very long time.