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Thread: how to spray something?

  1. #1
    Regular Member darko2301's Avatar
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    Default how to spray something?

    ok, i know that i might sound like an idiot but i have to ask this because i havent done this before. i would like to spray 2-3 bits of my car but i'd like to do it myself as those are small parts and they don't need to be perfect. i have a compressor and all tools needed, but i don't know how to mix paint?
    i have 3 things here for which i was told that i'll need them.

    first, i have a can of y547 paint (for my car)





    then, i have a can of clear coat "2:1"






    and the last thing is hardener.. strangely there arent any "how2" pictures on the can but as far as i understood is is mentioned on clear coat can



    there aren't any written instructions on cans , just some pictures but i'm too dumb to understand them lol
    i do understand in my own way but i don't know if i understand correctly

    what i'd do is first fill my gun with paint, then spray the surface and when it dries i'd make a mix of lacquer (2) and hardener (1) and then spray with that over the paint?

    or i have to mix it all together and then spray?

    how much should i wait between those steps?

    one more thing, i guess that i need to prime the surface first? i think that i saw some primers in spray bottles, would that do the job? i'm spraying plastic btw..


    can anyone help ?

  2. #2
    Regular Member mhvcbv's Avatar
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    hi m8
    give donpaul a pm as hes got a body shop.

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    Regular Member davree's Avatar
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    Vehicle : Insignia

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    Default

    It's a bit more difficult than that!!

    To spray plastic you will need a plastic adhesion promoter and plastic primer or the paint will just flake off!!

    You will need thinners also, the paint straight out of the can will be too thick to go through the spray gun and will drip and blob everywhere!!

    You will have to get the thinner to paint ratio right, tbh I think it's about 50/50 but dont quote me on that!!

    The laquer and hardener will need to be mixed together in the correct quantities and thinned to go through the gun.

    TBH you will be best off getting someone else to do it for you!!

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    Regular Member darko2301's Avatar
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    pm'ed him, cheers mhv

    anyway, i didn't think it was THAT complicated, and as i said it doesn't need to be perfect..
    i know that some people painted stuff themselves, eg bigrich painted his flakes iirc and that is a lot more complicated than to spray a 20"*30" flat bit of plastic..

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    Regular Member JSYSH466Y's Avatar
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    I bought the stuff at halfords which needed to be mixed in a can. It took him 10 mins of mixing different colours hardners etc, He did it on scales and had to do it to the gram following a recipe - not something I would like to do. Do the work yourself sure but get someone else to mix

  6. #6
    Regular Member davree's Avatar
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    Default

    If it doesnt need to be perfect, then have a go!!

    I would definately get some plastic adhesion promoter and primer first though!

    Mix the paint gradually with thinners until the paint will drip off a skewer or stick (but not run off).

    Leave the paint for 15 - 20 mins at 20 degrees C.

    For the 2pack laquer I think the ratio should be 2 parts laquer to one part hardener and then add enough thinner again until it drips but doesnt run.( on the tin in the pic above it shows to use up to 10% thinner)

    The laquer will take 16-20 hrs to dry at 20 degrees and harden over about a week

    Really you need a paint manufacturers data sheet to know the proper mix quantities for the make of paint/laquer you have but as you say it doesn't need to be perfect!!

    What are you spraying??
    Last edited by davree; 16th May 2009 at 14:08.

  7. #7
    Regular Member big rich's Avatar
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    Default

    Quote Originally Posted by davree View Post
    If it doesnt need to be perfect, then have a go!!

    I would definately get some palst adhesion promoter and primer first though!

    Mix the paint gradually with thinners until the paint will drip off a skewer or stick (but not run off).

    For the 2pack laquer I think the ratio should be 2 parts laquer to one part hardener and then add enough thinner again until it drips but doesnt run.

    Really you need a paint manufacturers data sheet to know the proper mix quantities for the make of paint/laquer you have but as you say it doesn't need to be perfect!!

    What are you spraying??

    that is the same as i done for my wheels and they came out a treat

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    Just be careful as some two pack paints contain cyanide when mixed and an air fed mask would be needed as it can cause breathing problems to some people.

    Nitro cellulose paint is a lot safer for spraying, but the local sprayers on here will be able to put you right

  9. #9
    Ex Vec-C Admin Deztroyer's Avatar
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    Quote Originally Posted by boogiemaster@blueyon View Post
    Just be careful as some two pack paints contain cyanide when mixed and an air fed mask would be needed as it can cause breathing problems to some people.

    Nitro cellulose paint is a lot safer for spraying, but the local sprayers on here will be able to put you right
    think you fill find the only breathing problems cyanide causes - are fatalities so breathing wont be a problem for too long

    0-Large smile ......every time it's driven

  10. #10
    Regular Member darko2301's Avatar
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    well, i got very useful step by step tutorial from paul which helped me do it (thanks mate )

    here is what he wrote in case someone else is interested too:

    ""
    1. paint mix to 5 to 1 ,1 being thinners.
    2. spray with two dusting coats allowing to dry in between then one heavy coat not to heavy or it will run just so it looks wet on the surface.
    3.allow to dry i would give it a couple of hours
    4. mix the laquer as you said 2 to 1 and add about 20% thinners mix for about 3 mins.
    5. turn your gun down a bit so it is not to feice and dust a coat on all painted items leave for 10 mins to allow it to go tacky repeat this until you start seeing a shine or relections like glass and leave to dry for about 12 hours.
    6. when you are happy with the end product polish and fit..

    ""

    anyway, i did as he said and now i'm waiting for the paint to dry and i'll add lacquer tomorrow and that's it..
    i must say that it looks pretty good, i won't say what it is yet but pics will follow

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