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This looks pretty closehttps://www.amazon.com/dp/B01KWJR0VU/ref=cm_sw_em_r_mt_dp_VSK2QQNQ7R11N3HGHZT6?_encoding=UTF8&psc=1
Paint it matte black.
Home Depot sells 3/4” angle aluminum in gloss black. It would be perfect.
The Third “B”
Ravena Coeymans Yacht Club
I'd be concerned with the curved corners and the edging. You probably won't be able to follow tbe curve without it cracking. Maybe...maybe not. And then I'd wonder if the glue will hold in the corners. Probably need to use a heat gun to activate the glue