Can you paint Acrylic top coat over existing (cured) 2 pack finishes????
If so what prep and primer do I use???
Cheers Greg..
Acrylic over 2 pac???
Started by
_82911_
, Mar 21 2006 07:18 AM
13 replies to this topic
#2
_MRNOS_
_MRNOS_
-
- Guests
Posted 21 March 2006 - 07:47 AM
Best off to remove the 2pak, otherwise use an isolater over the 2pak, then prime with acrylic undercoat before top coat
#3
REDA9X
-
- Inactive
-
- 0 posts
Removed
- Joined: 08-November 05
Posted 21 March 2006 - 10:10 AM
gENERALLY, NO, YOU CAN'T PUT ACRYLIC OVER ANY OTHER TYPE OF PAINT, IT BUBBLES UP AND FRYS. oops bloody capsss grrrr
#4
GML-31
-
- Members
-
- 5,239 posts
Oh My, Don't you post alot
- Name:Kev
- Location:Highland Park
- Car:too many
- Joined: 08-November 05
Posted 21 March 2006 - 10:57 AM
tell that to most panel shops, a lot of guys are still using acrylic for small repairs, and straight over factory 2pac. To date I have also done the same and never had an adverse reaction, maybe if the 2 pac is still fresh????? now acrylic over enamel is a different story... guaranteed to stuff up....
#5
_Pete_
_Pete_
-
- Guests
Posted 21 March 2006 - 05:48 PM
Properly cured 2pack should be fine to paint over with Acrylic provided you prepare the surface properly.
Acrylic normally relies on a chemical bond to stick to the substrate (ie thinners biting in) whereas 2K relies on a mechanical bond (proper sanding)
If you need to paint acrylic over the 2K, just make sure you have it properly sanded and prepared there shouldnt be any issue with the paint frying up thats normally the case with Air Dry enamels or the old style enamels with hardeners.
If you want to make sure your not going to have any issues with the paint not being compatible then perhaps trying a small section of the car first to make sure but if it is genuine 2 pack paint that has been applied properly you shouldnt have any issues, more than likely the finish will be better due to a lack of sink-back that can occur painting over old acrylics as a 2K base is more stable.
Acrylic normally relies on a chemical bond to stick to the substrate (ie thinners biting in) whereas 2K relies on a mechanical bond (proper sanding)
If you need to paint acrylic over the 2K, just make sure you have it properly sanded and prepared there shouldnt be any issue with the paint frying up thats normally the case with Air Dry enamels or the old style enamels with hardeners.
If you want to make sure your not going to have any issues with the paint not being compatible then perhaps trying a small section of the car first to make sure but if it is genuine 2 pack paint that has been applied properly you shouldnt have any issues, more than likely the finish will be better due to a lack of sink-back that can occur painting over old acrylics as a 2K base is more stable.
#6
_jdss57_
_jdss57_
-
- Guests
Posted 21 March 2006 - 07:09 PM
i really cant see any problems putting acrylic over 2k( i havn't had any so far) but WHY would you want to?...after using 2k you will never ever think about using acrylic again..granted it is a little less forgiving but worst case scenario you block it back and do it again if you stuff up. only reason i can see is if you have real pricks of neighbours, in which case they will be whinging about the acrylic smell anyways..
#7
_1QUICK LJ_
_1QUICK LJ_
-
- Guests
Posted 21 March 2006 - 07:35 PM
no probs at all i do it all the time at work.
#8
_Bomber Watson_
_Bomber Watson_
-
- Guests
Posted 21 March 2006 - 09:16 PM
i agree, no drama. why do paints fry when you put acrylic over them??? cause the thinners makes them. get some acryl thinners and poor it on your paint...it won't worry it. 2k is chemicaly hardened. it will dry under water. after its' dry its good shit.
just sand it with some 320 and go for gold.
just sand it with some 320 and go for gold.
#9
_jugs_
_jugs_
-
- Guests
Posted 26 March 2006 - 02:16 PM
Yes 2k is chemically hardened but it will not dry under water as water neutralizes the hardener and stops the reaction and also 2k will not harden under 14 degrees C. Just a random fact
Jugs
Jugs
#10
enderwigginau
-
- Moderators
-
- 2,000,527 posts
Admin Wrangler
- Name:Grant
- Location:Brisneyland
- Car:76 LX Sedan, 4 seater
- Joined: 04-February 07
Posted 31 March 2006 - 09:40 AM
Bend the car Greg?? <_<
Grant..
Grant..
#11
_82911_
_82911_
-
- Guests
Posted 31 March 2006 - 10:42 PM
Nah it's for the Walkie!
all will be revealed in due course....
Thanks for the replys pplz....
so far so good the acrylic seems to have adhered nicely to the original surface.
Thanks again.
Cheers Greg..
all will be revealed in due course....
Thanks for the replys pplz....
so far so good the acrylic seems to have adhered nicely to the original surface.
Thanks again.
Cheers Greg..
#12
_2wild4u_
_2wild4u_
-
- Guests
Posted 31 March 2006 - 10:51 PM
what about 2-pac over cured acrylic????????
#13
enderwigginau
-
- Moderators
-
- 2,000,527 posts
Admin Wrangler
- Name:Grant
- Location:Brisneyland
- Car:76 LX Sedan, 4 seater
- Joined: 04-February 07
Posted 31 March 2006 - 11:42 PM
No. 2pac must be applied over 2pac primer etc.
Greg - so thats why the GT went huh? Or are you moving up to Imp Pro?
Grant..
Greg - so thats why the GT went huh? Or are you moving up to Imp Pro?
Grant..
#14
_82911_
_82911_
-
- Guests
Posted 01 April 2006 - 08:29 PM
Grant...
the GT is still in the garage...hard decision..
and well...umm... Busted!!!
trying hard for a run at Eastern creek end of the month.
Cheers Greg..
the GT is still in the garage...hard decision..
and well...umm... Busted!!!
trying hard for a run at Eastern creek end of the month.
Cheers Greg..
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users
