Thank you so much!
The "tang" is a broomstick with a 1/4" piece of mdf that runs down the middle of the blade. I sandwiched 4 layers of 10mm EVA foam over top of that.
Filled the gaps with flexible filler. Coated the whole thing in 2 layers of plastidip and painted the sharp edge with metallic silver and the flat edge with hammered steel.
The handle wrap is 6mm ball chain, about 7 feet of it, lol. The pommel I turned on my father in laws Lathe. I added faux gemstones to the pommel and in the recesses on the blade. Took a little over a month on and off, maybe 20hr total. It's lighter than it looks and with the wooden pommel, surprisingly well balanced.