TOOLS: Tape measure, chop/miter saw, long level, wood boring bit a little smaller in diameter than the rebar, hammer drill, sledge hammer, flat shovel.
Make sure that you carefully level the first layer as the whole bed is dependent on this layer. I leveled it all the way around as well as leveling it to the other bed.
I made 4' x 16' beds since the lumber is 8' long and you shouldn't have beds more than 4' wide to be able to reach all parts of it from the edges. For the ends, I just chopped 3 pieces of the lumber in half. For the sides, I wanted to alternate for strength, so I start with 2 full pieces end to end, cut a piece of lumber for the next layer so that I have one full piece in the middle and two half pieces on each end of it, then the last layer is back to two full pieces.
Where ever there is a joint, drill a hole to either side of the joint and drive a rebar through. Our drill bit was only long enough to go through two boards, so on the top layer, I drilled through the top and middle layer, pulled the top board off and finished drilling the hole all the way through the middle and bottom. Do not attach any rebar until you have all the holes for one piece of lumber all the way drilled through all three pieces!
Now it is just a matter of finishing off the bed with some compost and we are ready to plant!
I actually have already finished that part too. I have even gotten both of these beds fully planted: 14 tomato plants, 8 Packman broccoli, 12 pepper plants (orange sweet, red sweet, yellow sweet, jalepeno), 3 Fordhook straight neck summer squash, 2 Black Beauty zucchini, 1 spaghetti squash, all that garlic, an equal size block of American Flag leeks, two 8' rows of mixed lettuce, a 2' row of more garlic, a 4' square of Maxibel green beans, a 2' row of Vates kale, eight 4' rows of various peas, and Bloomsdale spinach and Mammoth basil everywhere!! Yay for me!