Clever adaptation, but one question. How did you organize enough room
to get the drill into the box so you could do the drilling?
Well, there's not much room in there, only about 12", but that worked
out to be just enough room for the pocket hole jig and a sawed-off
stepped
drillbit in a 3/8" right angle drill. If the drill hadn't fit then yes,
I would have
s-canned the operation. Two other points - one, maybe the picture
isn't clear
enough to make it obvious, but the piece of 10" angle bracket is
grooved
into the wood. Two, there are two screws in the jig that protrude about
3/16" on the inside. They are really necessary to counter the pressure
(they dig into the inside of the box when clamped) of the clamp on the
guide. Here it doesn't matter, no one will see the inside of the box
when
it's finished. But if it was a bookshelf or something where the inside
was
visible in the finished piece, I'd try using rubber matting instead of
screws.