Painting My Car With Acrylic

[sky-017]

so i decided to do repairs my self after and L plater reversed into me , now all the structural repairs went well , although 4 days ago i just finished respraying my bonnet and front bar . after the cut back and buff it was looking awesome and i was pretty suprised with the quality for a home job . now today i went off to the beach and my car was parked in the sun for possibly 2 hrs , as i came back i noticed instead of the smooth finished bonnet i had , there was a texture to it ?..... i was pretty pissed off thinkin where did i go wrong . i mean i know if you leave something freshly painted in the sun this can happen as iv come across when i have painted other things with acrylic in the past .

now does any one know why this has happened?.. or whats the recomendation in order to fix this??... should i just sand the clear coat back and then give it a few more coats? i mean im sure i gave the bonnet ample time to dry etc...any help or info would be much appreciated.

thanks guys

[cruzin33]

sounds like the paint didnt adhere, best bet is to sand it down repaint it in acrylic let it sit for a few weeks then give it a coat in 2pac clear

[sky-017]

i was kind of thinking just using acylic base , and using 2 pak clear . end up going with the easier option . hmmm maybe ill have to do that.

[mrbov]

i was kind of thinking just using acylic base , and using 2 pak clear . end up going with the easier option . hmmm maybe ill have to do that.

2K clear will peel off after a few months, use acyl. clear 7-8 medium coats dont let the coats fully dry when spraying the next coat....... make sure coats arent dry sprayed (hard to get runs on acrylic unless you bomb it on)........ once finish empty out spraygun do not rinse fill up with thinners and spray 3 more coats( carefull thinners will run if sprayed medium/think).... let sit under sun after cutback 1500 wet.... buff 3 times 1 pure cut n polish 2 wet cut polish 3 water only possible cream polish...make sure pad is always clean or will not work.... if u have babypowder last buff(4) with that for a show finish..... wash soapy water, dry let sit under sun 1 day then wax or paint will not be protected......

Thats how we do showcar finishes.... just let everyone know the secrets..... spraypainters will hate me

[Sparkys]

What do you mean by a 'texture' on the bonnet? Was it crazing? Small cracks? Dull and chalky?

Each one could mean a different thing.

btw, don't wax it after one day only as per the advice in the post above, acrylic paint that hasn't been cured in a booth can take up to six weeks (less in this weather though) to let all of the solvent properly disperse, and waxing too early will trap the solvents in the paint and turn it soft and slightly dull.

[maximumrpm]

sounds like the paint has re-acted..you will have to sand it back and prime the areas again and then paint them again

[cruzin33]

2K clear will peel off after a few months, use acyl. clear 7-8 medium coats dont let the coats fully dry when spraying the next coat....... make sure coats arent dry sprayed (hard to get runs on acrylic unless you bomb it on)........ once finish empty out spraygun do not rinse fill up with thinners and spray 3 more coats( carefull thinners will run if sprayed medium/think).... let sit under sun after cutback 1500 wet.... buff 3 times 1 pure cut n polish 2 wet cut polish 3 water only possible cream polish...make sure pad is always clean or will not work.... if u have babypowder last buff(4) with that for a show finish..... wash soapy water, dry let sit under sun 1 day then wax or paint will not be protected......

Thats how we do showcar finishes.... just let everyone know the secrets..... spraypainters will hate me

How strong was the paint when using acrylic clear? We did a car in acrylic then a month or so later we hit it with 2pac clear and has been strong for 3 years also know of a show valiant done this way and has won a few trophies at local shows.

.

[mrbov]

thats right max, wax after a few weeks.... my mistake

as for 2k clear over acrylic. I have tried it many times never worked, clear always peels off or cracks. But however ever I use cheap no brand name acrylic and use ppg 2k high solids clear, so that may result in the peeling of the clear, could it?, I have let it wait over the weeks still the same.