(Mesh 1
: Base mesh & armature; mesh 2
: mesh you want to attach to bone)
Heres what you do:
Take Mesh 2
Mesh 2
and bring it under the armature of Mesh 1Mesh 1
.Now inside of the properties menu for Mesh 2
Mesh 2
find the Modifier tab.Under Object set it to the correct Armature. Then under Vertex Group and select which bone
Mesh 2
should be attached to.