I am building a top bar hive how wide should they be. The ones I have started are 24 inches long and 1 1/2. Cab I just make them all 1 1/2 long? What is the purpose of have them different sizes? I have also cut paint sticks in half and have placed them on the bars and glued them in the groove I have cut down the center of the bars. I know they need bars for broad building and honey so how many do I need to make of each one? Any advise would be greatly appricated.