usually lightly, and i mean lightly blast the fiberglass box. it will turn a lighter gray color. blow it off good and clear with a poly satin finish. the satin poly will bring the color back. i had a stamp company make my stamps for the part numbers.
[img]https://uniim1.shutterfly.com/ng/service...1143434/enhance[/img]
[img]https://uniim1.shutterfly.com/ng/service...1143394/enhance[/img]


Last edited by macmic87; 11/20/17 09:04 PM.