My starter kit was purchased from Mann Lake (their boxes, their frames.) Also i just purchased 100 frames from Kellys.
I noticed that the Mann Lake frame top bars are made such that they sit 1/4 inch below the top of the box(s) on the rabbet, and the bottoms are 1/4 inch short of the bottom of the box(s). This would leave 1/2 inch bee space between stacked supers, and i noticed i get a lot of brace (burr?) comb in this space.
On the other hand, the Kelly frames are made such that the top bars rest about 3/8 below the tops of the boxes in the rabbet, but the bottom bars run flush
with the bottoms of the boxes, maintaining the 3/8 bee space i read so much about between stacked supers.
Has anyone noticed more or less brace comb using kelly frames, or is this a moot observation