Paint not covering small areas in shell?

[foz75]

I masked off everything except the roof and roll cage of my novafox, and have sprayed black. But there are a few small areas where paint just will not cover. I did wash thoroughly with soap and warm water first. What's the best way to fix these spots? Would like to get them sorted before I spray the main part blue, so that no blue shows through. I'm not too worried because the decals will cover most of not all of these spots, but the whole point of me painting the roll cage was to avoid using the decals for it... And I'd like to know for future projects! 

[mtbkym01]

Yes I’ve experienced this and it is unbelievably frustrating after thoroughly cleaning the shell. All I can imagine is that it is still contaminated a bit. Once that paint you’ve already laid down in completely dry, try spot cleaning those spots again, then spray again lightly to see if it will adhere. 

[foz75]

Ok. I guess Tamiya polycarbonate cleaner is the best option?

[Willy iine]

I would spray the PS black into a plastic cup or something equivalent and touch up using a soft bristled brush.  I'd make sure the brushed layer is dry before reapplying another layer on top.  

Unless you have thinner, you might want to use a brush you don't need..   GL!!

[mtbkym01]

10 hours ago, foz75 said:

Ok. I guess Tamiya polycarbonate cleaner is the best option?

I wouldn’t as it could attack the paint that is already there

[alvinlwh]

42 minutes ago, mtbkym01 said:

I wouldn’t as it could attack the paint that is already there

Clean it again using ordinary dish washing liquid. If any paint is removed, they are not well bonded in the first place anyway, so just respray again. 

[foz75]

I was thinking polycarbonate cleaner applied carefully with a cotton bud... Don't fancy washing again, as that might affect the masking? Can always try brush painting, but I already tried a good spray that initially covered these spots, buy appears to have just run away as it dried and left them with very little paint.

Will washing affect the masking? I can redo all except the window masks, and don't fancy having to redo them with tape! 

[alvinlwh]

38 minutes ago, foz75 said:

Will washing affect the masking? I can redo all except the window masks, and don't fancy having to redo them with tape! 

In my experience, if using Tamiya masking tape, no, especially the larger masks like window masks. If you had already sprayed the masking tape areas, they are even better protected. 

[mtbkym01]

50 minutes ago, foz75 said:

I was thinking polycarbonate cleaner applied carefully with a cotton bud... Don't fancy washing again, as that might affect the masking? Can always try brush painting, but I already tried a good spray that initially covered these spots, buy appears to have just run away as it dried and left them with very little paint.

Will washing affect the masking? I can redo all except the window masks, and don't fancy having to redo them with tape! 

do exactly this, but replace the Poly Cleaner with Dish Soap and water

[GeeWings]

28 minutes ago, mtbkym01 said:

do exactly this, but replace the Poly Cleaner with Dish Soap and water

Yes, I think that's the way to go. 

The same happened with my Land Cruiser shell (for the GF01). I don't know if I didn't clean that area properly or if I got some grease from my fingers on. Anyway, I used a tiny (really tiny) amount of washing up liquid on a cotton bud. Then really hot water to make sure all the cleaner was off and then it was fine.

[foz75]

Ok, thanks all! Will report back in a couple of days when I've had chance to try it!

[foz75]

Quick update.... Cleaned the areas that weren't taking paint well with neat washing up liquid on a cotton bud, then damp cloth to rinse several times. Sprayed again,and pretty much the se as before 

So I tried spreading the paint a little with a cotton bud, and it seems to be covering those areas now 

Tomorrow I'll spray a little paint out and try painting these areas with a brush, if that doesn't work then I'll just cover with decals and hope they don't show...

 

[Willy iine]

@foz75  I use rubbing alcohol (IPA) on a cotton swab to clean those nooks prior to painting as sometimes my sponge do not reach deep into the nooks when I wash the body with dish soap.  Maybe next time that might help.

Anyway, GL with the brush application. 

 

 

[alvinlwh]

1 hour ago, foz75 said:

Quick update.... Cleaned the areas that weren't taking paint well with neat washing up liquid on a cotton bud, then damp cloth to rinse several times. Sprayed again,and pretty much the se as before 

Sounds to me that they are in a "blind spot"? You can see it does not mean the paint can, if that makes sense. 

[foz75]

Some of the spots aren't the easiest to spray, but none are too difficult, on most I have been able to spray fine, but the paint has then almost completely cleared from them by the time it is dry

[whahooo]

I would try to apply the Paint with a brush.

[foz75]

That's what I did in the end, the result wasn't great but then another spray and it's decent enough. I carefully cleaned the rest of the shell with 70' alcohol, masked off the black in case the blue showed through, and have it all sprayed up. It's not a perfect job, but once the stickers are on it will be fine. Thanks all for the tips! 

[GeeWings]

Glad you got it sorted @foz75. post up some pictures when you’re done.

[foz75]

Will do, spent a couple of hours this afternoon cutting and sticking the stickers. All ready for a first run!

[Willy iine]

3 minutes ago, foz75 said:

Will do, spent a couple of hours this afternoon cutting and sticking the stickers. All ready for a first run!

Awesome man.  Have fun and post pictures of your finished car.