If you want to do any big style "flower patterns" or wrist rolls, you need a lightweight sword, or do a wrist twist.
If you have a lightweight sword, forget about the "tang", unless it's hardened stainless.

I don't reckon that in a medieval swordfight the knights were blocking their opponents with the sword, as a larger nick in the blade would makes it instable and prone to break - resulting in a slashed knight.
As far as my informations go, movie/ show blades are up to 5mm thick and 80 mm whide... and that's
a lot of steel (wick, kero and fire excluded)... not to speak of the handle/ balance. I reckon it's unsuitable for manipulation.
Mine is 850mm long, 3mm thick and 50mm whide - tell you one thing: It's already
heavy to manipulate (not even close to dream about any "wristing" or "antispin flowering")... but "tanging" is okay.

I'm onto making a new blade, that is light(er)weight (less thick and thinner), hardened stainless, longer handle (for the girls)

I'll practice with it and let you know how it goes, results should be there by next week.
This "contact swording" (better not done with fire, but apart from that) looks really nice, I guess I remeber the scene you're talking about, 333
