Bracket for vise on a drill press

This is a bracket made to hold a vise onto a drill press platform. Mine happens to be a skil drill press and I'm using 1/2 inch x 1 1/2 inch bolts and nuts to secure them. The holes are for half inch diameter bolts, and the dimensions are for a 3/8 inch high lip (vise) and 1/4 inch depth. I printed 4 with PLA at 100% fill and seems to hold and fit well with my set up. I'm using this to allow for a more precise way of using an end mill on my drill press without the hassle and expense of conve