Cellulose Cracking/crazing

[Rob155]

Hi All,
I respayed my Classic mini 18 months ago and was vey pleased with the results, however the paint has cracked/ crazed but it only seems to be affected in the areas that are prone to being in direct sunlight ie the bonnet, the roof and the tops of each wing and top of the doors. I have painted another mini in the past and this was fine (and still is) could it be a problem with the paint or is it a problem with the application? The thing is, I have got the car stripped down ready to re paint it, but don't want to go to all this trouble just to have to do it all again.
thanks for any help!!!
Rob.

 

[Chickenjohn]

Either use a bar coat or get out the Nitromors.scraper and then the DA and strip to bare metal! Crazing is caused by a reaction to old paint that was on the car before. Sometimes, just having lots of layers of old re-sprays can cause problems.

 

[Rob155]

Thanks for the quick reply Chickenjohn, I'm off to get some Nitromores then!!!

 

[Chickenjohn]

Make sure you get all the paint stripper off before etch priming!

I find after scraping the loosened paint off, it is sufficient to thoroughly DA the panel then wipe down with panel wipe.

 

[gaz_moose]

wilkos paint stripper is just as good as nitromorse and is cheaper.
oh and wear gloves and safety glasses

 

[the snooper]

thats some nasty hard work stripping back to bare metal i think i would have sanded back then isolated it

 

[aircoolsteve]

i've recently painted my type3 VW squareback and i stripped all the paint before starting with etch primer. learnt the hard way though. the spirit goes all the way to the metal, then comes out again to evaporate. its then that the crazing gets underway. the more layers of paint, the more lightly you will get the crazing. sometimes if the temperature is on the warm side the spirit comes out too fast and crazing occurs.
other reactions are caused by chimical reaction of conflicting paint finnishes, poor quallity filler, not getting the stripper off properly and a host of other things that if you are lucky, won't happen at all!
steve

 

[Rob155]

Have took your advice and spent the last 4 days stripping back to bare metal, I hate the car now!!!!! ;-)
I used Wilkinsons own brand stripper, it worked very well and was 1/2 the price of Nitromores!
Now I'm at the bare metal stage, I'll be etch priming possibly today or tonmorrow.
Aircoolsteve, are you saying even though I've stripped back to bare metal and cleaned it all down I could still make a hash of it(ie, crazing paint again) cos I don't think I could go through that stripping process again!
Thanks everyone for your help and advice.

 

[steveo3002]

its been known for strippper to cause problems

id give it a good wash with hot soapy water and good rinse , then dry it straight away with a airline

 

[Keith1200]

its been known for strippper to cause problems

id give it a good wash with hot soapy water and good rinse , then dry it straight away with a airline

spot on advice good clean with lots of hot soapy water (two or three times). However 'too late now' I would avoid using stripper on the whole car, as it's not always easy to remove it from some areas, it's down to personal preference tho, good for flat panels.

Normally i would use sand-paper but as you have issues with the paint! best to strip 'right back'

 

[Rob155]

Well, I just wanted to revive this thread with a big THANK YOU to everyone for their help.
The mini has undergone a complete transformation (hopefully the paint will stay on now!)
Here are a couple of piccies of the finished product:

Thanks Again everyone!

 

[Mogzieno1]

What a beautiful mini Fantastic work!!