Physics, Push-Pull with the longsword, bad cuts…. and you!
If you have had (good) formal instruction on longsword cutting mechanics, you would have been informed that you don’t want to create a levering action between your two hands. Here’s why.
Rotation
Rotational (Spinny) & Translational (Straight-ey) Motion & Swords
There are two different ways that things move: translationally and rotationally. If the big words scare you, think ‘straight’ and ‘spinny’.