Alu-braket for old 8bit-computer (NewBrain)

The finish on the item is of cause not like a extruded aluminum profile but with same surface roughness as a FDM-3D print with ~0.6mm nozzle. The surface is not lined as a FDM print but more as unevenly surface. Best guess is 0.1mm surface roughness. The items I received was sanded on the side facing out. Nice! The items has a gray surface like the have been primed to protect the aluminum, but i am not sure. I will absolutely be thinking in doing 3D metal prints again. You can spend a lot of time in the metal shop trying to get same result as this. :-)