Peter,
Hoffmann frames most definitely do swing in Langstroth boxes when the
frames and body is clean. As the box/frames progressively plugs up with
propolis/wax damping takes place until it becomes rather difficult to
remove the frames at an adequate speed.
Whilst working with bees in France, I placed large fencing staples at
the required distance between the frames - just above the lower bar -
That stopped swinging. (In half Dadant boxes)
Just to many supers to do that now.
Peter
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