DW wanted to have our MBR bath remodeled, her girlfriend had hers recently updated. The old bathroom had a fiberglass shower that was truly showing its age. That BR was part of an addition to our home in 1993.
I wanted to add to the project so I decided to build a couple of shelves. Chose Maple HW plywood and a Walnut shelf edge.
Finished with 3 coats of Shellac and two thin coats of MW Wipe on poly.
In picture 3 installed 4 temporary supports with 4d nails, checked for level, and used them to support the cleats use for permanent support of the shelves. Put cleats on the wall using a punch transfer rod and nylon wall screw anchors. I filled the screw holes with 3/8" walnut plugs.
I have access to punch transfer rods in the AZ shop and find them very useful. I ordered mine from Amazon and were less than $25 for a set of 28 punches.