DIY berger panel suggestions?
wet sand it with 400 grit
same process but with 1000 grit and bit of dish soap to get rid of grease
good rinse
dry with hair blower so no lint is left over
and apply complete LIGHT COATS at about 10 inches away of satin black KRYLON for plastics
light coats are the key
I did mine and my wife's at the same time and where I didn't clear mine and did on her's, you can tell a difference. Mine has faded and her's still looks good.

