OK, it had to happen: cutting the cab, a hole for the cab-to-camper-body passthrough. We want to have a passthrough because of two reasons: first, so that our dog Usko can enter the truck via the camper body and walk to his seat in the cat. He really dislikes being lifted. And the second reason is the ability to start the truck without having to go outside, in case of emergy. A safety reason.
It all starts with a frame, with rounded corners for the boot that will create a closed connection between cab and camper body.
Frame with rounded corners 
Frame for the pass through
After that, it’s time to cut the cab. And of course, to weld the frame in place.
Cutting! 
Look, a hole! 
Put in the frame 
Welded in place
An exciting step in our plan. It seems it fits quite well.