I created this to replace a broken post bracket that holds a solar panel, which is used to supply power to a landscape light. The light and panel are sold by Frontgate: Pro Series Solar VI Spotlight https://www.frontgate.com/pro-series-set-of-two-vi-solar-spotlight/897827
The bracket half molded into the back of the panel did not break. The broken piece that I replaced inserts into the metal post stake, and is bolted onto the original bracket on the back of the panel.
I printed this with ABS, 50% infill, 0.2mm layers.