My wife asked me to build her a compost bin with two 4'x3' compartments. She also wanted removable fronts for easy access. So once I dug all the post holes and cut/repaired the underground dog fence wire the project got pretty fun. The posts are 4x4s and the side channels that hold the lattice panels are 2x2s. The trim on top of the panels are 1x2s. Also used a pant load of hot-dipped 3" screws. Started with fully charged li-ion batteries in my impact, drill and circ saw. Did not have to change any of them the entire project.