It's pretty straight forward to print and mount. For the main hand use PLA at 200c for the extruder, 60c for the bed, 2 walls, 1 surface layer, 30 percent infill and tree supports to print. More walls isn't necessary as it is plenty strong with just 2. For the padded insert print with TPU at 228c on the extruder, 0c for the bed, 2 walls and 20 percent infill.
Glue the 2 parts together and use a single 2 ½" screw to mount it onto the wall.
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