Karlin was one of the first glass makers to set up their own studio in the early seventies.In 1973 he began teaching glass at Manchester Polytechnic before relocating to Herefordshire in 1974. He became an established figure in the British Glass world and was made Chairman of British Artists in Glass in 1979. The same year he began teaching glass at Bristol Polytechnic (1979-1982) At the same time he helped his wife Greta set up a Waldorf Kindergarten, which is now a thriving Steiner Academy with over 300 children. Karlin has spent his professional life divided between building and glass. He said “I have been a glass blower and a builder for the last forty odd years. Now winding down the building but building up the glass. Strong simple shapes with presence is my goal." His glass is exhibited in some of the country’s finest collections, including British Craft Council, Victoria and Albert, Manchester City Art Galleries, Dudley Glass Museum, Dan Klein Collection, Nature in Art, Gloucestershire and Shipley Art Gallery.