About this 3D model

This is for the B&D Workmate - Dual Height, with the little extension legs, as pictured. They have a plastic clip which holds the legs open/closed. They are badly designed and break when perished. So here is my replacement. They are a PITA to fit, needs a bit of finangling and filing/smoothing, but they work. Photo courtesy [B&D](http://www.blackanddecker.com/power-tools/WM425.aspx) Update: Still a terrible design, even my replicant broke after a year or so weathering, but at least I can print replacements...