Postby s_taillebois » Tue Jun 12, 2007 11:38 pm
Apparently so, especially since he seems to be deriving his own alloys to approximate earlier materials. Usually modern casting bronze is about a 3% silica mix, he mentioned using a lead/bronze alloy to achieve the same end.
Although some ancient forms of bronzes did use arsenic, but that was more an aesthetic aspect than a practical one (it changes the color of the metal).
For whatever it's worth, likely when he's forging the edges, he's being very careful on the temperatures used. Depending on the alloy+temps, when heated some bronzes become brittle, and will break or fracture when hammered. (although some alloys/bronze can also be hardened by differential cooling, by leaving a bronze in an investment mold and letting it cool therein can result in a very hard surface; at times enough to dull a cutting burr...but given he's dedication to authenticy probably not using investment or ceramic shell molds (*ceramic shell (sort of) actually a Shang Chinese invention) Looking at the images, some nice casting and general finish work. ...
Concerning the transition from iron to bronze, partially a matter of easier acquisition of raw materials. Another slight disadvantage is that bronze does tend to be heavier for an equivalent implement to other materials, nor is it a material really suited for 'flexing'.
Although with the early firearms/cannons, bronze was often preferred over iron...hence for the period this forum studies...unless one's considering some bombards or ships cannons (the terror weapons of the era) ....bronze was long superceded for individual weapons.
Steven Taillebois