It was Major George Vilhelm Palmstruch who first came up with the proposal to start operation in Edfastmark. When his attention began to be directed at this hidden farm village is not really known but in 1751 he became interested in a silver ore plant 1 mill northwest of Bygdsiljum. It was perhaps when he settled on Edfastmark’s very good conditions for a plant. The first steps for the mill were taken in the spring of 1756. Many projects were planned, but unfortunately Palmstruch’s financial resources were quite insufficient. His role in Edfastmark’s history lasted only a few months before 1757 he was commissioned in the Pomeranian War, where he was captured and embroiled in financial difficulties which really put a stop to his youth’s dreams.
Then came the Stockholm trading company Jennings & Finlay as the new company’s leading and driving force. Thus, Edfastmark changed its name to Robertsfors. The mill has John Jennings and Robert Finlay to thank for their creation. Jennings married a sister to Finlay. Initially, it was the older and experienced brother-in-law Finlay who ruled, but quite soon Jennings also began to have a greater influence on the business.
Since the Jennings & Finlay partnership dissolved in 1762, Finlay sold some of its mills, including Gimo and Robertsfors in 1764 to the mill patron Jean Henri Lefebure. After 3 years, Lefebure passed away but his 30-year-old son Jean took over at the father’s place. In the end, it turned out that transporting the iron ore to Robertsfors was too expensive and costly. The ore transports were unavoidable because there were only iron-meagre ore in the vicinity of Robertsfors. On the other hand, the pig iron could be refined in the mill to bar iron and this in turn is forged into finished products such as nails and implements. As a result of such processing, transport from the mill became cheaper as these products weighed considerably less and demanded a higher price than the pig iron.
In 1782 and 1783, the cast iron smithy and manufacturing works were put down opposite the blast furnace on the other side of the bank of the Rickleån river. In 1783, production began in the cast iron smithy. The first manufacturing equipment was manufactured in 1785.