What is the most effective workflow for making several (20) different multi-user models each into single user?
My use case is: I have 3 different objects each distributed manually several times through Alt-D (what I would call an instance). I now need to join all the 20 models into one mesh.
To get you all to my level I understand that I can make a unique copy of an object through Shift-D and an instance of an object through Alt-D. And I know I can click the number besides the object name in the Object Data panel to make it single user. I have no idea how to do this as a batch operation.
To be honest I am having a hard time grasping the terminology used to describe blenders instantiation of 3D objects (multiuser, single user, data block). I come from a 3Ds max background where an object instance means that changes made to an object is in effect in all instances of that object.