It took a full day to assemble, and then started rusting the moment I started loading compost materials into it. First both metal lid opening assemblies became very stiff and hard to operate, then the metal hinges on one lid started rusting away, and then broke so that the lid fell off, rendering that bin unusable. The hinges on the second lid are heading the same way. The dual-bin tumbler is a cool concept. Execution, not so much.