> This is probably not the answer your looking for, but I read about it and tried it this year, so far so good.  Thicker topbars, that's it.

Back in the 1970s when Pierco frames first came out, we noticed this right away. The frames had almost nothing where the top bar should be. We called them burr comb magnets. Later, the plastic foundations became available so you could combine them with the wood frame and reduce the burr comb to a non-issue.  Lots of burr comb is usually a sign of a good honey flow, so I wouldn't complain too much about that. 

I still use the one piece Pierco frames in my 6 5/8 supers, however. They have several good features. One, no assembly. Two, they hold more honey. You get significantly more honey per super with them, since they don't have the bars. I really don't like plastic frames in the brood nest, though, even if they hold more brood. But that's more an aesthetic thing, I reckon. They don't hurt anything

PLB

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