CL> The caveat is that they usually do not attach it  well at the bottom,  so you lose space,  and its worthless in a
CL> radial extractor.

So why to use bottom bar at all? Much to my surprise bees don't attach
combs vertically between supers on frames without bottom bar and
manipulation is the same as with full frame.

But yes, I use reversible extractor, not radial one.

Ivan

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