The churning of milk to cream and butter was all done by hand at that time, but in 1877, a German company had started to use centrifugal force to separate the milk. These early separators had as a disadvantage that they had to be stopped when the cream was ready for skimming off, and the vibration from the centrifuge could cause the milk to scum up, spoiling both the milk and the centrifuge.
At the Maglekilde Factory, Mikael Pedersen was involved in the design of a continuous centrifuge. Maglekilde Maskinfabrik received a patent on 6th November 1878, with the names of Forman L C Nielsen and O Petersen and Co as inventors but no mention of Mikael Pedersen's involvement. The Maglekilde-centrifuge was set in production in Roskilde, but demand was so high that in 1881 the manufacturing rights were sold to the company of Koefod and Hauberg in Copenhagen, who began manufacturing the centrifuge and production thus ceased at Maglekilde Maskinfabrik. Mikael Pedersen was both disappointed and angry with L C Nielsens treatment of him. He presented himself for Jens Nielsen at the other machine works in Roskilde, "Roskilde Maskinfabrik". Jens Nielsen was more than glad to have Mikael Pedersen in his employment, as he now thought up even better improvements to the cream centrifuge, which were soon patented and the machine set in production. It was to change Mikael Pedersen's life.