But when Roland operated it himself, he realized the actual situation was not as simple as he had expected.
After slogging in the backyard for four or five days, the harder drill bits were completed successfully though. With the use of Anna's flame at a high temperature, he could easily get molten iron at over 1,500 Celsius degrees. Without any temperature constraint, he could quickly and easily produce small quantities of steel with the conventional wrought-steel method. By stirring the molten iron with an iron bar, the excessive carbon and other impurities in the pig iron would oxidize in the air, and after repeating the operation several times, the premium steel appeared as the molten iron cooled down.
The problem lay in the first steam engine.
