**HDPE**
I picked up an old Hardigg equipment case for cheap to use on my 4x4 roof for all my camping equipment since it's weatherproof, indestructible, and has high volume. Anyhow, its an OD green color (surely military surplus) but am thinking about painting it a lighter color (both for looks and to keep the heat down). I know HDPE doesn't hold paint very well due to its chemical makeup, etc. but I know there are some paints out there (and adhesion promoters) that specifically say they'll work. Anyone used any particular brands that work well that can be bought at Home Depot or whatever? Right now I'm thinking of 3M adhesion promoter followed by some Krylon Fusion paint. Thoughts?
The box:
j_tso
Dork
4/25/24 11:09 p.m.
No idea, but I think you mean HDPE
I eagerly clicked to see what such a track day equipment case might look like, haha.
I'm still interested now that I know it's plastic we're talking about, because I've never had success painting HDPE. Usually unravels starting at an edge or a corner for me after some time, even if the initial outcome seems promising.
When I read the title I thought "That depends on what your track day equipment case is made of" 
If everything sticks equally badly maybe try Plasti-Dip? Downside is that it's kind of a fragile coating.
Duke
MegaDork
4/26/24 11:03 p.m.
If you want to try it, scuff the whole thing with fine sandpaper or coarse steel wool, then wipe it down with acetone or Prep-sol. Spray it with a coat or two of high-build primer. Let the primer dry thoroughly between coats. THEN use multiple light coats of your top coat.
But even with all that, don't get your hopes up.
