The New Hotness

The bottom end of Wouxun KG-UV3D battery packs have an intricate set of lugs and ramps:

Those features mate with this set of holes and planes on the bottom of the radio:

Which requires making something like this:

Which attaches to the base of the GPS+Voice case:

Which came out quite nicely:

The trick is to extrude a chunk of the main case shape, then subtract this angular doodad:

Then slice off the angular parts to suit (the purple objects represent volumes that will be subtracted from the gray part):

Most of the heavy lifting happened with that version, but this one fits better…