Thanks DrSiro for your update.
There are tools within Unreal that aren’t always shown, or overlooked, but one that is VERY handy is to turn on the display axes on selection, option shown here
I tend to up the axes scale, as I can’t see real well
. Now, when you select the bone/joint in your hierarchy, it’ll show you the correct orientation. In this particular model, you can see the orientation, X is pointing down the chain(+), and the Z is the “rotational” direction. Riggers will change the up axis depending on the direction they wish to change it.Also, the IKTwoBone is much more user friendly and takes care of some of the odd math that happens under the hood. Try it out!
