Reverse engineering by a student

The Gentleman who has been so instrumental in getting us off the ground with 3D printing came to one of our students with a problem. He was having no luck finding some replacement drawer slides for a piece of furniture he had at home so he asked me if a student could reverse engineer them for him. After a couple of test designs and prints we finally came up with a perfect fit. This is one part of the slide pictured below the original.