Here is one but not what I was looking for
"The casting of iron artefacts also became common
during the 16th century, but in the initial period after the
introduction of the blast furnace in the late 15th century
artefacts were mainly cast directly from the melting
furnace. The first separate iron foundries probably
appeared by the mid-17th century. "
Keep in mind that modern cast iron goes way beyond the carbon footprint in blade steel.
Huntsman, 1740 and Wilkinson patents entirely voluminous topics we could regard but look at the last photo (with the red background) showing the face of the plates. Much like those chased pommels shown in the last post, I see castings.
Just my thoughts.