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Old 07-17-2005, 11:52 AM
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Using water based paint

In 2007 it becomes illegal to use solvent based paints here in the UK.In other words 2 pack basecoats.So we'll all be using water borne basecoats.
For those of you already on water based what advice/info can you give regarding spraying techniques/flashing off/drying etc.
cheers
Daz

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Old 07-17-2005, 12:25 PM
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Send your car to the U.S for a paint job. , just kidding. DuPont has been marketing water born paint for some time now. I think GM is using it exclusively. I have heard some rumblings that it is not as environment friendly as the tree huggers would lead you to believe.

Vince
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Old 07-17-2005, 02:48 PM
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Vince,I can get data sheets from the manufacturers but they aren't much help in a real world environment. I am actually a pro body man and even the paint reps can't give me the information I want.I know 1 or 2 shops who have recently gone water base and they are working on a trial and error basis to see what works,not an ideal situation.
I don't know how it works in the US but unless you're a large bodyshop or a main dealer nobody gives a crap and I'm neither.
There is going to be a lot of small,independents going out of business in 2007 thanks to the EU.
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Old 07-17-2005, 05:46 PM
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I think there is a difference between the Water Borne and Water Base Paints.

Look over this website for a Water Based Paint from Auto Air Colors. The paint pigments are suppose to be the same grade as other automotive paints. The application is different and unique. It requires a learning curve in the various steps.
http://www.autoaircolors.com/

Simon Murray does a great job of showing how these AAC Water Based Products are used and applied in his videos.
http://www.smdesigns.co.uk/
A good video 40PSI Custom Painting Part II.
http://airbrushes.com/product_info.php?products_id=1845

Don't worry because what happens Over Seas and in that Other Country attached to the USA known as CALIFORNIA will happen in other places sooner then later for imposed and forced restrictions. Just a matter of time for change to happen everywhere.

Last edited by Timer; 07-17-2005 at 05:51 PM.
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Old 07-17-2005, 07:32 PM
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I tried some water based paint on a radio controlled aircraft that I built. Didn't like the results at all. Stripped it all off and went with PPG Concept.

Vince
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Old 07-18-2005, 07:27 AM
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Its really nothing to worry about.
First you can thank the paint companies for pushing that law through as its the only way they will sell this stuff to recoup R&D money to develop it.

Waterborne base has been around since the early 80's or late 70's your regular primers and clears work with it so nothing needs to be changed as far as procedure.

Spraying the base will be no different than spraying solvent base.

Now the bad news:
Waterborne bases like air flow and warm dry air. A high humid day is a nightmare and lack of airflow is a nightmare for drying.

If you have ever sprayed waterborne primer you know one coat will dry in 30 or so minutes to sand but two coats with no flash it easily gets up to 4-12 hours before sanding. So now flash is very important, on a 30% humidity day you might let the first coat flash 10-15 minutes, on a 70% day that first coat may need an hour. Than you factor in cold weather.

Buy a lot of hair dryers and make a stand to hold them!
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Old 07-18-2005, 08:08 AM
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I can see major problems doing candy jobs with waterborne colors

Maybe we should all stock up on the good old 2K products and store them in our bomb shelters? LOL
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Old 07-18-2005, 08:13 AM
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Quote:
Originally Posted by baddbob
Maybe we should all stock up on the good old 2K products and store them in our bomb shelters? LOL
Yea, along with all that ammunition

Vince
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Old 07-18-2005, 10:23 AM
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BarryK
Am I right in thinking the basecoat comes ready for use,you don't actually have to add water in the same way you would add thinners (reducer I think you call it) for a 2k basecoat ?

If you have to apply warm air to make it flash off how would you manage on a full respray.Going round the vehicle with a dryer would take forever wouldn't it ?
Daz
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Old 07-18-2005, 08:38 PM
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The last time I sprayed any you mixed it with its own reducer (water)
Its not tap water and you will pay a premium for that high grade water.

Allover, a walmart box fan circulating the air is all you need.Of course you won't want to be painting if its raining out.
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