How to attach part to bone and later animate it?

[neviquatro (nevi)]

Whenever I try attaching a part to a bone or directly adding a Motor6D to it and use moon animator to animate them, i can only animate the bones and cant even touch the part i added onto it

And after I welded together with moon (literally the same):

And if i’d use rigid constraint I couldn’t move the part that im trying to attach

[neviquatro (nevi)]

Spent so many hours on this.
The fix was literally simple.

adding tools to skinned meshes in roblox is DIFFICULT #shorts