Not much progress at the forge today but I started refining more wrought iron for future experiments. Instead of the high-phosphorous Globe Elevator wrought iron, I am using lower phosphorous wagon tire.
The idea with the refining is to remove impurities by forge welding at high temperatures. I also rotate the pieces against each other so that the grain does not always get forged in the same direction. See Forge Diaries: Episode 5 for more information.