I've been hauled over the coals by the head of PR for allowing a toilet bowl to feature in the previous post, and in view of the fact I am the head of PR that was quite a feat. But here I've added a back to the 'phone-box' if for no other reason than a return to our roots. Actually it does, at the cost of a little weight and material cost, add again significantly to the rigidity of the whole. And as no one else out there appears to be trying to fly people bracketed by a pair of drones, we need all the rigidity we can get.
