In 1747 the vacant old mill building provided room for the first laboratory with a drying oven and a kiln as well as accommodation for the technical director of the porcelain manufactory, Johann Christoph Glaser.
Similar to alchemists, who searched for the philosophers’ stone to transmutate base metals to silver or gold, quacks were roaming the country who called themselves arcanists. These arcanists pretended to know the secret arcanum to produce porcelain, like Glaser. Although first firing of the kiln took place January 1750 it became obvious that Glaser did not have the necessary knowledge to produce porcelain.
Meanwhile, the arcanum reached Meißen, Höchst near Frankfurt/a.M. and Vienna. In the year 1753, the operating manager of the porcelain manufactory in Höchst
Johann Kilian Benckgraff could be recruited to Fürstenberg. Unfortunately, he died just four weeks after his arrival and along with it the hope of the arcanum.
However, Benckgraff bequeathed his knowledge in writing. Along with the already achieved progress this allowed within the same year for producing the first hard paste porcelain. At the behest of duke Charles I porcelain from Fürstenberg bears the blue F branding.
Johann Christoph Glaser (1684 – after 1753): Pretended to be able to make porcelain
Johann Kilian Benckgraff (1708 – 1753): brought 1753 arcanum to Fürstenberg