un join

how do i un join something?
if i have joined two meshes how can i get them back to be separate? i have don this befor but i can not remember what i did.

You can select the parts of the mesh you want to separate in edit mode and press P. That’ll remove the selected portion from the current object and send it to its own.

Jayson tell you the exact thing that have to be done. So perform this act and if it still does not work than reply here again.:yes:

However if you want to just split the mesh in two parts while remaining as one object, press [y] after selecting the part that you want to seperate.