**Top Bar Idea**

I have my own way, each bar is made by taking two lengths of square timber, around 1 inch x 17 inches long, I then sandwich a strip of cut unwired foundation between the 2 pieces, total depth of 1.75 inches so that I have about 3/4 of an inch hanging below the bar for the bees to build on along the length, allowing a bit of bee space on the ends where it meets the TBH sides. I then nail the 2 pieces of wood together through the sides to get a firm grip of the foundation.

This works every time in terms of straight combs, and the strength of the foundation being trapped between the 2 pieces of wood means I never get a comb collapse in the hive.

I can get a photo of this if anyone may be interested.

If you go into a timber or builders yard they will have lots of spare bits of wood to make bars out of, they often have them between timber planks as spacers and they are just binned. You don't have to have a perfect size of width or depth, the bees can work it out.

Good luck whatever you do.