problems with finding defects

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pampos

New member
Hi guys,

i noticed sometimes that some defects are not visible during the day but only in night...

in my shop a lot of daylight is coming through the windows and this is i guess is making my halogen lights ''weaker'' that they should be.If the day is cloudy or the sun is gone or even at night, i can see everything under the light...

this is a big problem if you consider that you see a perfect finish but you will find out later that it is not...For example there is a car in the shop for service(not for polishing), and during the day i saw that it was full of some light swirls.When i saw it in the night,with the shop lamps, without any daylight, i noticed that the paint was full of holograms rids and swirls....

I thought that i should detail the cars during the night but it is almost impossible :)

Also I am thinking to create a 'dark room' in my shop with a tent...Is this a good idea?

what do you think?Any other suggestions?
 
pampos said:
Also I am thinking to create a 'dark room' in my shop with a tent...Is this a good idea?
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This is what I would do. In my old shop, I would detail with the garage door open, but as soon as I started doing paint correction I would close the door and work under artificial lighting only.



If it's an option, I would try that out.
 
This is what i am thinking to do but i wasn't sure if it is a good idea...So the less light is better?I mean is it better to have only the halogen lights???
 
IMO inspection is often different from regular working (e.g., like actually doing the correction) when it comes to the lighting.



For spotting marring during inspection you want point-source illumination in an otherwise dark environment; it's the specific type of *contrast* that makes the flaws show up.



You may well want brighter light when doing the work just so you can see what you're doing, but that means changing things back and forth now and then.
 
i mean it is hard to see some defects during working.For example i am not sure if there are some holograms during working with rotary so i avoid it and i use or finish always with UDM....And generally it is harder to see defects(mostly light defects or holograms) in a brighter room than in a darker....
 
pampos- Yeah, it *can* be a real hassle. FWIW, I can't see faint holograms in *any* artificial light and it's not always possible to pull the vehicle out into the sun...that can make for a real dilema.



I spot a defect (doing whatever that requires), take note of where it is (perhaps marking it with a dab of finishing polish) and then I work on it even if I have to do so "blind". Then I go through the whole inspection thing again. Yeah, I can spend a lot more time messing around with the inspection than I do on the actual polishing some times.
 
bufferbarry said:
have you tried to turn the halogens off and just use the natural light?
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With the direct sunlight it is OK.I can see everything...But unfortunately i cannot work in the sun :)

During the night i can see everything using only the garage lights.But during the day all those defects that i saw on that car are ''gone'' : )

that's why i am thinking to create a ''dark detailing room'' so i will be able to see everything....
 
my garage has no windows there are time where i turn everything off , but the halogens to concentrate on a panel. when im removing wetsand marks its just halogens and a sun gun. good luck
 
It is not the amount of light but the spectrum, this is why you need halogen,LED,metal hallide if possible,sun gun, infratech.It is exspensive of course but this is part of the cost of high level correction along with all the pads and compounds plus the polishes we all need to put out quality work.
 
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