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 Post subject: Did I Just Kill My Case?
PostPosted: Sun Aug 16, 2009 1:23 pm 
Little Foot
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Hello MaximumPC forum users. I think I just shot myself in te foot. I just took apart my NZXT Tempest and spray painted it black. Currently the parts are drying in my garage. I didn't even think until I was putting the last coat on, but I bought a d painted the case with plain old Rust-O-Leom self etching primer (2 1/2 coats) and regular Gloss Black Enamel (3 coats). The paint can said the the paint is good up to 93 C or 200 F, but it was gummy after sitting out all night when I began to sand and put the last coat on. So what I am asking is, us my computer case totaly $€R3W3D because it isn't automotive grade paint? I really need to know before I do or do not put my components back in this sucker Monday or Tuesday. [/b]


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 Post subject:
PostPosted: Sun Aug 16, 2009 1:28 pm 
Monkey Fed [PC]
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It sounds to me like you did not allow enough drying time between coats. You put on roughly 6 coats of paint in a single day? What was the ambient temperature in your painting area? What was the overnight temp?


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 Post subject:
PostPosted: Sun Aug 16, 2009 1:39 pm 
Little Foot
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I put about 5 coats on yesterday, and allowed roughly 15-30 minutes between each coat. It was about 90 F yesterday and in the 70s last night if I had to guess.

I put the final coat ofblack on today after I sanded out the oopsys.


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 Post subject:
PostPosted: Sun Aug 16, 2009 1:53 pm 
Monkey Fed [PC]
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Was the paint dry to the touch between coats, or did you just time it and reshoot? Typically gloss takes longer to cure, but at 90F it should have gone rather quickly.


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 Post subject:
PostPosted: Sun Aug 16, 2009 1:56 pm 
Little Foot
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The paint was dry to touch, but it still felt gummy or squishy if that's the right word. I could press my thumb on it this morning and see a rough outline without getting any paint on my hand.


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 Post subject:
PostPosted: Sun Aug 16, 2009 2:04 pm 
Monkey Fed [PC]
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Hmmm.....was it squishy like that between coats? It should have been hard.

If it was squishy between coats, you essentially sealed in layers of uncured paint. Is it hot there today? If so, my advice would be to stick that thing in the sun for a while and attempt to bake the paint, so it will finish curing. I'd say use the oven, but wives get angry when their ovens smell like Krylon.


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 Post subject:
PostPosted: Sun Aug 16, 2009 2:06 pm 
Million Club - 5 Plus
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Oh, man.

When I painted my old DEC case, it took me almost a week: one coat of primer, three coats of black, one coat of clear. A day between each coat in 80°F+ weather to make sure each coat was absolutely dry and hard before sanding and tacking... and it still scratched off easily! :(

I'm glad my present case has plastic exterior panels; I'm never painting steel again.


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 Post subject:
PostPosted: Sun Aug 16, 2009 2:10 pm 
Little Foot
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I do not think sticking it outside would be my best bet because I live off of a lake and it is quite windy, that way things aren't caught in t. But I defenently can leave it in my garage in 90+ heat all weak.


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 Post subject:
PostPosted: Sun Aug 16, 2009 2:13 pm 
Monkey Fed [PC]
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Yeah, you need to let that stuff cure and harden up before you add more to it. Next time you paint, be sure it's not sticky/gummy before you put another layer on! Another secret? Use primer, then FLAT black for a coat or two, then hit it with a gloss black or a clear coat. Flat black cures very quickly, and the flat will hide your primer well too. If you hit it with clear, it will look like gloss black when you're done, and have about 1/4 the cure time.


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 Post subject:
PostPosted: Sun Aug 16, 2009 2:22 pm 
Little Foot
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Well since I am done painting guess I'll just let the pieces sit out there till Tuesday or wednesday to cure and harden up. Saying that it does harden up fine at some point this week, the type of paint I used won't be a problem will it?


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 Post subject:
PostPosted: Sun Aug 16, 2009 2:27 pm 
Monkey Fed [PC]
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No, not at all. It was just Krylon, right? It may be a bit on the easy-to-scratch side, but careful handling and cleaning will be ok.


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 Post subject:
PostPosted: Sun Aug 16, 2009 2:54 pm 
Little Foot
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Okay that is good news I will just have to be extra careful with it then.


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 Post subject:
PostPosted: Sun Aug 16, 2009 2:59 pm 
Monkey Fed [PC]
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Shoot man, the first thing I did when I bought my Toyota 9 years ago was to take the wheels off, wire brush the WHOLE frame and all the suspension, and paint it black with Krylon. It's lasted this long, so it's not as weak as it would seem. However, I used flat instead of gloss, so it hides the scratches better. That should give you some idea of the "ok-ness" of that paint!


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 Post subject:
PostPosted: Sun Aug 16, 2009 3:05 pm 
team psycho or sumthin
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Commando.US wrote:
I live off of a lake


Humidity = longer drying time and generally makes for teh bad paint jobbies yo!


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 Post subject:
PostPosted: Sun Aug 16, 2009 3:10 pm 
Monkey Fed [PC]
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drainbread wrote:
Commando.US wrote:
I live off of a lake


Humidity = longer drying time and generally makes for teh bad paint jobbies yo!


Damn man, I totally missed that. Yep, drainbread has a very, very good point here! Nice catch.


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 Post subject:
PostPosted: Sun Aug 16, 2009 3:17 pm 
Little Foot
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Is there anything to look for to know when it is done? Or when it is just hard and black.L


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 Post subject:
PostPosted: Sun Aug 16, 2009 3:25 pm 
team psycho or sumthin
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Commando.US wrote:
Is there anything to look for to know when it is done? Or when it is just hard and black.L


There is a very good chance that the paint will flake, try a couple of clearcoats.


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 Post subject:
PostPosted: Sun Aug 16, 2009 3:52 pm 
Little Foot
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Wait so I need to put clearcoat on after it dries even though I used gloss? That was the main reason I used gloss paint.


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 Post subject:
PostPosted: Sun Aug 16, 2009 5:08 pm 
team psycho or sumthin
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Just a suggestion.


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 Post subject:
PostPosted: Sun Aug 16, 2009 5:29 pm 
Little Foot
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Okay I'll see how it dries and go from there.


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