While a top bar hive could be made out of pretty much anything, I want to be sure mine will last for a while and gives the bees an optimal working environment. I flattened out my hive plans,
searched for appropriately sized lumber, and put together a materials list.
(3) 1"X12"X6' #2 Pine boards
Galvanized (or brass) wood screws - I chose 2 1/2"
(8) 2" galvanized hex bolts, nuts, and washers
Total price = $50.22
I thought this would be enough wood for both the hive body and the lid, but that turned out not to work. More on that later.
After marking up the wood, I was ready to begin cutting.
I've never really done much woodworking and quickly found that some of my cuts and measurements were not quite right. Fortunately, the critical angles, widths, and lengths were on par.
There are very few important measurements when building a top bar hive. Since, in my case, I wanted to be based on the golden mean, I wanted to be sure that the sides of the hive would meet the bottom at a 120 degree angle. This meant the follower boards had to be the correct dimensions. Follower boards are meant to fit exactly into the hive, hugged by both sides and the bottom and suspended by a top bar. Honeybees tend to fill in any cracks they don't want in the hive, and if the follower boards are not snug, the bees may build propolis around the air spaces which would result in quite a bit of scraping just to get the boards out.
The purpose of the follower board is to limit the size of the hive and keep the bees in the part of the hive you want them. As the colony grows, moving the boards outward allows you to make a bigger space for your bees. Too much space too soon could prove stressful and limit the bees ability to climate control the hive.
Fortunately, I was patient when cutting and piecing together the follower boards and they came together just right. Once they were together, I could set the sides along the angles and trace the front and back boards of the hive to know where I would need to drill holes and insert screws. Again, these are important measurements so the internal dimensions of the hive will be the same front to back. Now I was ready to build!
The front and back screwed into the sides:
The bottom board also screwed into the front and back boards (at this point I realize I'm making a manger):
You can see the follower boards inside the hive in this picture. Eventually, the bottom board will have a rectangle cut into the bottom with hardware cloth covering the opening. This will allow for ventilation in the hive. Since it needs to be cut out with a jigsaw, I was able to attach the bottom before worrying about the hole.
Unfortunately, I did screw up my measurements and cuts for the roof/lid. I'm glad I did though because I think my original lid would have been too fancy and heavy and I decided to pare it down. I'll have more on that once it is finished.