simple rigging setups using kinefx

 

typical basic kinefx rigging for organicish shapes

simple rigid body FK rig. Key points are packing each rigid part, and using the capture packed geo node. make sure the skeleton points are at the desired pivot points.

basic setup here - line as a skeleton, isolate the FBIK controller points. the MATCH BY ATTRIBUTE setting is usually what makes things work! Also on the FBIK node, you might need to tweak the tolerance parameter.

fusing geo using uv attribute (eg. separated head from neck)

Lets say you've separated the head geo from the body for rigging purposes or otherwise.
How do you glue it back together reliably, without resorting to many individual vertex pair selections and fusing each?
UV's! As long as your mesh has good non overlapping UV's (which existed before you chopped it), you can promote them from vertex to point (might as well give it a new name, and keep the originals for actual texture use) then specify this new attribute at the Match Attribute (see below). Turn off Snap Distance, as the UV data is what will snap vertices/points together (in this case I've called it fuse_uv). I've left everything else in the Fuse node as default.
This is super handy especially if your model's point count is not fixed (eg you're not sure where you're cutting the model yet)