Do you super these hives or just take honey from the sides? Looks really neat, I'm almost curious to try one.
Just take honey from the honey frames. The plans I am using are from Mr. Bush's website. There are two sets of top bars, 1 1/4 inch and 1 1/2 inch. The 1 1/2 inchers are for the honey frames. The narrower ones are for brood. When you need more room for the hive to expand, you'll take the honey from the honey frames and add the bar back in after robbing. Do a crush & strain to extract.
KTBH looks much more user friendly than the 8 frame way I am going...Can these be purchased or do they have to be custom made...hhhmmm
I don't know if you can buy them commercially. I am building mine. I have the top bars done and I just need to make a trip to get some more lumber to do the hive itself. Check out Mr. Bush's site for the plans. You can do it with just a table saw.
I have been doing a lot of reading on these hives and I really like them. I am trying one this year and see how it goes. I don't think I will have a whole bunch of them but only a few to play with. If nothing else, it is fun and very satisfying to build the hive from scratch.
One advantage that I see aside from that of which Mr. Bush explains on his site is that you can accumulate wax for other things. Some might find this to be a disadvantage but I think that if you (or someone else) wants to try making candles, soap on a rope, or whatever, you'll have wax available. I am hoping to get my wife a little more involved and hopefully she will get into making something(s) with the wax.