The two worked together at G. Eifrig's Københavns Lervarefabrik in Valby in 1885 before joining Bing &amp; Grøndahl's porcelain factory the following year. Thanks to the firms artistic director Pietro Krohn, who had been their instructor at the Arts and Crafts School, they were given a studio of their own where they decorated the Heron Set, pioneering the firm's underglaze technique. The set was successfully exhibited at Copenhagen's Nordic Exhibition in 1888 and at the Exposition Universelle in Paris in 1889. As a result, the firm was able to develop underglaze as its main approach, popularizing its blue, transparent porcelain.