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Old 07-06-2009   #46
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Re: how to set up spray gun

dont think its ever had one, not needed for home use
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Old 09-06-2009   #47
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Re: how to set up spray gun

cool
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Old 10-06-2009   #48
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Re: how to set up spray gun

Quote Originally Posted by bridges View Post
Now i'm confsed Alex

Our old paint type was cellulose.

*Primer
*Cellulose base coat.

The cellulose has a shiny finish which once sprayed is sanded/polished.


2k paint

*2k Primer, mixed with a hardener.
*2k base (colourcoat), mixed with a hardener
*2k clear coat (lacquer) mixed with a hardener

Thinning of each paint is to allow better flow through the gun. I dont spray 2k base coat but I usually thin the primer by 10-15% although all products vary.
I don't thin my lacquer but some need again 10% to allow better flow and thus prevents orange peel.

1k paint

* primer mixed with thinners
* base (colour coat) mixed with 50% thinners
* clear coat (lacquer) used neat or with 10-15% thinners

1k paint is less toxic than 2k. The clear coat lacquer is weak and requies more finishing with an inferior shine to 2k. I usually spray 2k lacquer instead over the 1k base coat.

Water base.

*2k primer, although a water based primer is on the market
* waterbase base coat. pre mixed. or if not then mixed with 15% distilled water or 20% special water thinners.
*2k clear coat however 1k can be used as well. A water base lacquer is soon or possibly on the market.

Water base is great. Is just like emulsion. Do not believe the bull, as it is easy to spray and only requires a hair drier to dry panels fast. remember the water is just to thin the paint. once dry it has all evaporated off.
Are these percentages of the total amount or amount of paint?

I.e if using distilled water, a 100ml mix should have 85ml paint and 15ml water?

As for primers, is a 2k essecntial for waterbased? i have loads of half used rattle can primers? Where are primers described for 1k paint available from and would the be suitable if using a water based paint?

I'm not looking to do any panel spraying yet just experimenting.
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Last edited by CLXCraig; 10-06-2009 at 18:17.
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Old 10-06-2009   #49
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Re: how to set up spray gun

when we paint stuff at work we use xylean to a whatever feels good mix
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Old 10-06-2009   #50
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Re: how to set up spray gun

as a thinner?
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Old 10-06-2009   #51
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Re: how to set up spray gun

yer
get your paint throw some of that in get your rule dip it in stir remove check consistancy
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Old 10-06-2009   #52
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Re: how to set up spray gun

cool. what about primers? gonna practice on some scrap metal first so will try out rattle can primers.
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Old 10-06-2009   #53
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Re: how to set up spray gun

im onabout painting steelwork beams and such i guessed everyone would have guessed this

we normally just use primer since it dont matter too much
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Old 24-06-2009   #54
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Re: how to set up spray gun

i getting the hang of it now, base cout came out well, but i still cant set it up very good to spray clear coat
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Old 25-06-2009   #55
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Re: how to set up spray gun

I might be able to help, what is the problem with your clear coat, I spent ages working out how to spray this with my set up.
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Old 28-06-2009   #56
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Re: how to set up spray gun

We use the 2k 420 fast clear with a 2k universal hardener, then use 2k thinners. Never done me any wrong
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Old 29-03-2011   #57
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Re: how to set up spray gun

How to set up a gun well ,no definitive way people paint different and all guns are different ,but with a 1.3 fluid tip. 2 turns on material and 2 turns on air should be fine and a large fan shape .
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Old 29-03-2011   #58
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Re: how to set up spray gun

does hose diameter have an effect on spraying?
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Old 02-04-2011   #59
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Re: how to set up spray gun

Quote Originally Posted by dave View Post
does hose diameter have an effect on spraying?
Not really, not much that i notice, 8mm bore is what i use for water based and 2k ,no problems,it will be your application method ,gun set up, and mix, that is the problem, first top coat should be dry looking, as this acts like a gripper coat. the next top coat ,2nd coat should be wet when put on ,thats it no more top coat needed
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