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Chat Area => General Discussion Area => Topic started by: craig on 10 September 2008, 14:49:05

Title: Advice on spraying plastic
Post by: craig on 10 September 2008, 14:49:05
I recently bought a quad bike for my son in green but the colour is slightly faded on certain area's so i was considering trying to spray the plastic fenders a different colour!!is this an easy job and what would i need to do ::) spray primer on first??what colour primer??grey/white??what would be the routine to follow please :)any ideas :y
Title: Re: Advice on spraying plastic
Post by: cem_devecioglu on 10 September 2008, 14:57:18
heres some info

..clean the areas with a sanding paper (800,1200 grid) that you will paint..(no old paint must be leftfor best results)

.. ask the paint  shop which primer suits your application (honestly dont know the color and models there) (here is white-smoke color)

..spray 2 layers of primer (wait between layers to dry)

..after the primer dried completely sand the primer with 1200,1500 grid

..apply 2-3 layers of paint and 2-3 layers of lack..(if metallic)
Title: Re: Advice on spraying plastic
Post by: Danny on 10 September 2008, 16:42:37
does paint need sanding between coats?

sorry to intrude, its just i have a boot spoiler to spray for my corsa, will that need 2-3 coats of laquer too even though it'll be non-metallic?
Title: Re: Advice on spraying plastic
Post by: razzo on 10 September 2008, 16:57:26
Quote
does paint need sanding between coats?

sorry to intrude, its just i have a boot spoiler to spray for my corsa, will that need 2-3 coats of laquer too even though it'll be non-metallic?

You don't have to sand the paint between coats, give it a couple of colour coats & if you are not happy with it flat the paint & polish it with G3 compound or similar. If its a base coat it will need a clear coat to give it a deep shine & protect the finish
Title: Re: Advice on spraying plastic
Post by: craig on 10 September 2008, 17:08:46
Quote
heres some info

..clean the areas with a sanding paper (800,1200 grid) that you will paint..(no old paint must be leftfor best results)

.. ask the paint  shop which primer suits your application (honestly dont know the color and models there) (here is white-smoke color)

..spray 2 layers of primer (wait between layers to dry)

..after the primer dried completely sand the primer with 1200,1500 grid

..apply 2-3 layers of paint and 2-3 layers of lack..(if metallic)




its the kind of plastic that has been made green and not painted ;)so it won't need sanding will it??? as there is no paint on it ::)

just primer it and then paint???? :-/
Title: Re: Advice on spraying plastic
Post by: cem_devecioglu on 10 September 2008, 19:57:55
Quote
Quote
does paint need sanding between coats?

sorry to intrude, its just i have a boot spoiler to spray for my corsa, will that need 2-3 coats of laquer too even though it'll be non-metallic?

You don't have to sand the paint between coats, give it a couple of colour coats & if you are not happy with it flat the paint & polish it with G3 compound or similar. If its a base coat it will need a clear coat to give it a deep shine & protect the finish

yep..sanding between layers not necessary :y
Title: Re: Advice on spraying plastic
Post by: cem_devecioglu on 10 September 2008, 19:59:20
Quote
does paint need sanding between coats?

sorry to intrude, its just i have a boot spoiler to spray for my corsa, will that need 2-3 coats of laquer too even though it'll be non-metallic?

for non metallic paint seperate laquer not used..And it has a different mixture .. :-/
Title: Re: Advice on spraying plastic
Post by: cem_devecioglu on 10 September 2008, 20:03:33
Quote
Quote
heres some info

..clean the areas with a sanding paper (800,1200 grid) that you will paint..(no old paint must be leftfor best results)

.. ask the paint  shop which primer suits your application (honestly dont know the color and models there) (here is white-smoke color)

..spray 2 layers of primer (wait between layers to dry)

..after the primer dried completely sand the primer with 1200,1500 grid

..apply 2-3 layers of paint and 2-3 layers of lack..(if metallic)




its the kind of plastic that has been made green and not painted ;)so it won't need sanding will it??? as there is no paint on it ::)

just primer it and then paint???? :-/

the general purpose of sanding is :
 micro and fine scratches make extra holding surface for paint layer

so event its clear plastic you need sanding ..Otherwise paint in time will come out..
Title: Re: Advice on spraying plastic
Post by: CaptainZok on 10 September 2008, 21:23:33
Hycote acrylic primer works very well on plastic and they make halfords primer which may be easier to get hold of.
As Cem says sand first as paint doesn't stick well to shiny plastic.
Title: Re: Advice on spraying plastic
Post by: albitz on 10 September 2008, 21:23:33
ask for paint with plasticiser in it,otherwise it will crack and flake off after a while.  :y
Title: Re: Advice on spraying plastic
Post by: craig on 10 September 2008, 21:47:02
cheers everyone :y :y
Title: Re: Advice on spraying plastic
Post by: cem_devecioglu on 10 September 2008, 22:18:08
for plastic, primer must be epoxy type..Now I find it..