In the laboratory of the imperial palace, Einar was using a mortar to grind up some bauxite.
This because he planned to make aluminum because many of the things he wanted to build had to occupy that element.
Although he did not remember the ancient method of obtaining aluminum, he could remember the method of obtaining aluminum that he learned in the military.
This is because he had some opportunities to visit the military factories of the Mexican army, where a large amount of minerals were used.
One of them was aluminum, so there was an exclusive aluminum factory that produced specifically for military weapons.
The process that they will use would be electrolysis, which would need to generate energy without stopping.
For that, he made a small Stirling engine for the laboratory, which worked with a small water boiler that used coal briquettes to heat the water.