I put together an armature for a four legged creature, but I had to make each leg armature separate. I now want to combine them into one armature. Is there an easy way to do this?
- Select all the leg armatures, in Object mode.
- Go to the Object menu, >> Join (or Ctrl + J).
That said, I hope you didn't weight paint anything yet, because if so, you may have to rename some of your bones' VGs.
You can combine the bones into a single armature using the method Mike outlined. But while the four leg armatures are all part of the same armature, they are not physically connected. To connect them together into a single entity, you will have to construct the desired connecting bones yourself.