I had painted my panel with flat black polyurethane, but the flatness never was even. I just repainted part of the panel with black "Wrinkle Finish" from Krylon. Set me back all of $5 and I really like the finish. Took the panel down to bare aluminium, and scratched it good with scotchbrite - people told me it works better with no primer, and I think it does. Cleaned the parts well with dish soap and water and let them dry. Applied a heavy wet coat of Krylon and then hit it with the heat gun, after about 5 min, the wrinkle "reaction" begins at one corner of the piece and then moves across the piece. I then hit it with another heavy wet coat and did the same. After the second wrinkle "reaction", I baked the part in the oven (electric) with the vent fan on for ~3 hours at 150 deg.
Provided a great looking, lightly textured surface that will not show finger prints.
