CreaPrim does what it
says. I takes the active object and turns it into an Add
Mesh addon. When you
enable this, your custom object will be added to the Add->Mesh menu.
Documentation
Go to User Preferences->Addons and enable the CreaPrim addon in the
Object section.
First select your object or objects. The addon will show up in the
3dview properties panel.
The name (in panel) will be set to the active object name. Select
"Apply transform" if you
want transforms to be applied to the selected objects. Modifiers will
taken into account.
You can always change this. Just hit the button and the selected
objects will be saved in your addons folder as an Add Mesh addon with the
name
"add_mesh_XXXX.py" with XXXX being your object name. The addon will
show up in User
Preferences->Addons in the Add Mesh section.
Enable this addon et voila, your new custom primitive will now show up in
the Add Mesh menu.
REMARK - dont need to be admin anymore - saves to user scripts dir
ALSO - dont forget to Apply rotation and scale to have your object show up
correctly