AndyKent
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Registered: 3rd Sep 05
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Whether or not the guage measures the individual layers hardly matters does it? Someone who is cleaning cars all the time will know the common make up of the types of paint, they might only take an overall reading to make sure its the same as average.
ie. if most Fords have a thickness of 50 whatevers, and they take a reading on a car with 20, they know something is wrong. Likewise if they read 200 its been badly resprayed.
So long as the reading comes out at about normal they know its likely to be the same as all the other Fords (or whatever make).
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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Used by the guy in the Bentley post:
http://www.defelsko.com/p6000/positector6000.htm
Maybe I'm not reading it properly but I cant see anything about measuring multiple layers?
So what he's done there is buy a product that is useless to the application and then show off said product to customers..
Nice 
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
User status: Offline
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quote:
Originally posted by AndyKent
Whether or not the guage measures the individual layers hardly matters does it? Someone who is cleaning cars all the time will know the common make up of the types of paint, they might only take an overall reading to make sure its the same as average.
ie. if most Fords have a thickness of 50 whatevers, and they take a reading on a car with 20, they know something is wrong. Likewise if they read 200 its been badly resprayed.
So long as the reading comes out at about normal they know its likely to be the same as all the other Fords (or whatever make).
Ofcourse it matters, it matters more than anything else! The distribution of the layers over the gross thickness means the difference between the clear coat being 1 to 90% of the whole thickness, I personally wouldnt consider +/- "90%" accuracy to be very good 
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Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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i understand what john says about not wanting to cause damage. Makes sense.
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AndyKent
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Registered: 3rd Sep 05
User status: Offline
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quote:
Originally posted by DaveyLC
quote:
Originally posted by AndyKent
Whether or not the guage measures the individual layers hardly matters does it? Someone who is cleaning cars all the time will know the common make up of the types of paint, they might only take an overall reading to make sure its the same as average.
ie. if most Fords have a thickness of 50 whatevers, and they take a reading on a car with 20, they know something is wrong. Likewise if they read 200 its been badly resprayed.
So long as the reading comes out at about normal they know its likely to be the same as all the other Fords (or whatever make).
Ofcourse it matters, it matters more than anything else! The distribution of the layers over the gross thickness means the difference between the clear coat being 1 to 90% of the whole thickness, I personally wouldnt consider +/- "90%" accuracy to be very good
But if in the past they've worked on say 30 or 40 cars of the same type, all they'll need to know is whether the thickness is within a 'normal' range.
On something unusual or exotic I agree, they do need to know the layer thicknesses, but on 80% of the cars they work on its just over the top.
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DaveyLC
Member
Registered: 8th Oct 08
Location: Berkshire
User status: Offline
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quote:
Originally posted by AndyKent
quote:
Originally posted by DaveyLC
quote:
Originally posted by AndyKent
Whether or not the guage measures the individual layers hardly matters does it? Someone who is cleaning cars all the time will know the common make up of the types of paint, they might only take an overall reading to make sure its the same as average.
ie. if most Fords have a thickness of 50 whatevers, and they take a reading on a car with 20, they know something is wrong. Likewise if they read 200 its been badly resprayed.
So long as the reading comes out at about normal they know its likely to be the same as all the other Fords (or whatever make).
Ofcourse it matters, it matters more than anything else! The distribution of the layers over the gross thickness means the difference between the clear coat being 1 to 90% of the whole thickness, I personally wouldnt consider +/- "90%" accuracy to be very good
But if in the past they've worked on say 30 or 40 cars of the same type, all they'll need to know is whether the thickness is within a 'normal' range.
On something unusual or exotic I agree, they do need to know the layer thicknesses, but on 80% of the cars they work on its just over the top.
When you machine polish a car the idea is that you dont go through the clear coat, so how does knowing the thickness of ALL of the paint help?
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AndyKent
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Registered: 3rd Sep 05
User status: Offline
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Because using your past experience you will know that you can take off a certain amount of clear coat and still leave loads behind. If you fully measured out the paint thicknesses on every car you worked on it would take forever and most of the time you'd end up with very similar readings = waste of time.
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
User status: Offline
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quote:
Originally posted by AndyKent
Because using your past experience you will know that you can take off a certain amount of clear coat and still leave loads behind. If you fully measured out the paint thicknesses on every car you worked on it would take forever and most of the time you'd end up with very similar readings = waste of time.
But you dont know how much of that thickness is the clear coat..
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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really you dont need a paint depth measurer, you need a clearcoat depth measurer because thats all your really interested in how thick it is
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AndyKent
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Registered: 3rd Sep 05
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If you've been doing it a while and measured the thicknesses (fully) on the first few cars of that type you will know.
After that you just assume they're all similar unless you take an overall reading which looks well off.
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
User status: Offline
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quote:
Originally posted by AndyKent
If you've been doing it a while and measured the thicknesses (fully) on the first few cars of that type you will know.
After that you just assume they're all similar unless you take an overall reading which looks well off.
In that case the factory can tell you what the average thickness is so why bother measuring? 
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Scotty_B
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Registered: 11th Jun 03
Location: East Kilbride
User status: Offline
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quote:
Originally posted by AndyKent
If you've been doing it a while and measured the thicknesses (fully) on the first few cars of that type you will know.
After that you just assume they're all similar unless you take an overall reading which looks well off.
Both of the drivers side doors where re-sprayed on my Focus so I doubt the 'thickness' will be the same as the original paint now. 
Assumption is the mother of all fuckups.
[Edited on 23-03-2010 by Scotty_B]
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chr15barn3s
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Registered: 5th Oct 03
Location: Farnborough
User status: Offline
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http://www.shineondetail.com/Products
Click the picture of the paint guage and read the description.
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AndyKent
Member
Registered: 3rd Sep 05
User status: Offline
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quote:
Originally posted by Scotty_B
quote:
Originally posted by AndyKent
If you've been doing it a while and measured the thicknesses (fully) on the first few cars of that type you will know.
After that you just assume they're all similar unless you take an overall reading which looks well off
Both of the drivers side doors where re-sprayed on my Focus so I doubt the 'thickness' will be the same as the original paint now.
Assumption is the mother of all fuckups.
[Edited on 23-03-2010 by Scotty_B]
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Root
Member
Registered: 28th Dec 08
User status: Offline
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quote:
Originally posted by DaveyLC
quote:
Originally posted by AndyKent
If you've been doing it a while and measured the thicknesses (fully) on the first few cars of that type you will know.
After that you just assume they're all similar unless you take an overall reading which looks well off.
In that case the factory can tell you what the average thickness is so why bother measuring?
in case it's been repaired along the way in which case you need to be extra careful when detailing that area in case it's quite thin.
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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But if its been repaired its likely to be a damn sight thicker than factory?
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3CorsaMeal
Member
Registered: 11th Apr 02
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i had a pro measure paint depths on my car with one of those meters, trouble is the thickest reading was where the car had been repaired/painted before, but that area actually seemed to have the thinnest clearcoat/laquer layer
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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surely all you are interested in is how thick the clearcoat is, because thats all you want to alter, if you take this totally off then you are in trouble anyway.
so unless the paint depth readers can specifically tell you the depth of just the clearcoat then i cant see what use the reading is 
[Edited on 23-03-2010 by Steve]
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John
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Registered: 30th Jun 03
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Have you missed the bit we found out that they can tell you how thick the clearcoat is Steve?
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Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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You ought to get one of those paint readers on your door repair mate.
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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yes i did see that, but it only says sometimes it can tell and none of the instruments iv seen posted actually have 3 seperate breakdowns for the layers.
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micra_pete
Premium Member
Registered: 23rd Apr 03
Location: West Yorkshire
User status: Offline
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quote:
Originally posted by Steve
surely all you are interested in is how thick the clearcoat is, because thats all you want to alter, if you take this totally off then you are in trouble anyway.
so unless the paint depth readers can specifically tell you the depth of just the clearcoat then i cant see what use the reading is
[Edited on 23-03-2010 by Steve]
Steve, as in Steve?
How long have you been back?
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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quote:
Originally posted by Ojc
You ought to get one of those paint readers on your door repair mate.
i bet its about an inch thick with hammerite
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3CorsaMeal
Member
Registered: 11th Apr 02
User status: Offline
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quote:
Originally posted by Steve
surely all you are interested in is how thick the clearcoat is, because thats all you want to alter, if you take this totally off then you are in trouble anyway.
so unless the paint depth readers can specifically tell you the depth of just the clearcoat then i cant see what use the reading is
[Edited on 23-03-2010 by Steve]
thats how i feel about it all.
just polish away, if it buggers up then you need it painted. Easy
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Root
Member
Registered: 28th Dec 08
User status: Offline
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quote:
Originally posted by DaveyLC
But if its been repaired its likely to be a damn sight thicker than factory?
No, because you don't know to what level it has been repaired. It might have been a bodge job that the previous owner did and he's only applied one layer of paint and one layer of lacquer, so you take the depth measurements to be careful not to cut into the lacquer
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