I saw Wil’s bottom board setup for his hives. I had hoped to incorperate the idea into this one, but things didn’t work out. My customer (my future daughter-in-law) needs it for a college project and it had to fit certain parameters.
The whole thing used 2 pcs. 1 X 12 X 8’ white pine and a 8/4 X 9 X 9’ hunk of poplar to make the bars. Throw in a few feet of 1/4” ply., a piece of double strength glass, and some turnscrews that I’ve had around since the early 70’s and you have it.
The basic box is put together with Titebond III and pocket screws on the inside.
I posted a pic of the steps to make the bars from 8/4 stock. After squaring everything up and cutting , jointing, and planing the pieces to uniform but oversized blanks I cut the angles for the sides and ends. This way I still had a fairly stable blank to work with. Then I separated the pieces and trimmed the sides to width.
I guess I have about $95 in material ( only ‘cause I bought the good pine at The Depot).
Pic #4 shows the moveable false back so you can increase the useable space of the hive as needed,