I liked the basic idea from the "Buckle strong, easy printable supportless", but I didn't like the part that holds the belt/strap and I needed a bit larger belt/strap. So, I started from scratch without Sketchup and then made some deltas. The belt is meant to make a loop through each buckle piece so that it is adjustable. This whole assembly is surprisingly strong! This version is also printable without support, but the top part is not perfect. It made need a bit of trimming here and there for a smooth fit - at least if you get a bit of oozing, like I sometimes do with PLA.