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Oily Offline
#1 Posted : Wednesday, 6 October 2010 12:47:50 PM(UTC)
Oily

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A question for those experienced in 2 pack paint please.

I have almost finished assembling a vehicle which had been painted in 2pack several months back. The problem I am having is that the paint chips off at the edges very easily leaving the chalky looking undercoat exposed.
1st instance was transporting the rolling shell home a line of paint 50 mm long 2-3 mm wide fell out of the lower edge of the stone tray, I initialy thought I must have damaged it winching the beast up onto the trailer. (paint has fallen off along a welded crack repair)

2nd leaning over the car to check the auto oil I had about 3 inches of paint crunch off along the top back corner edge of the front panel (where the bonnet closes) It just crumbled like chips in my hand as I was supporting my weight so as not to lean on the paint.

A slight goof with a small spanner chipped another hunk last night whilst adjusting the bonnet latch.

In angst I walked over to the 40 year old red PMG ute I am using for donner parts and belted it inthe same place, Hardly marked it!
What do you think could be wrong. am I right to go and question the painters? (PPG Clear over PPG Deltron over PPG Autothane I hope)
Any clues appreciated thanks Oily
git Offline
#2 Posted : Wednesday, 6 October 2010 4:46:46 PM(UTC)
git

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You need a new painter as the last ones don't know how to paint correctly. 72 hours is the max a primer can stand before colour is applied. Talk to PPG themselves and they will confirm your paint job is history. Your PMG ute was painted correctly and that is why it won't show adhesion issues.


look out, the guru is coming through...
look out, the guru is coming through...
playwme Offline
#3 Posted : Wednesday, 6 October 2010 6:44:24 PM(UTC)
playwme

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Got any pictures? Seems a bit sus. Correctly applied 2 pack shouldn't "fall" off even if you hit it with a sledgehammer.
commodorenut Offline
#4 Posted : Wednesday, 6 October 2010 11:10:28 PM(UTC)
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Definately an issue with adhesion between the undercoats & colour coats. Your painter has stuffed up big time, and you definitely have a problem that will need to be fixed properly - and sadly to say, it will involve removing the paint back to the undercoat as a minimum.

I've 2-packed some come springs - the right way - etch, then primer/undercoat, then colour. I've dropped them, used spring compressors on them, and generally treated them roughly, and they still look perfect. Maybe some slight scratches, but no chips at all. 2-pack is very durable when applied right.

Cheers,

Mick
_______________________________________________________________

Judge a successful man not on how he treats his peers, but on how he treats those less fortunate.
Cheers,

Mick
_______________________________________________________________

Judge a successful man not on how he treats his peers, but on how he treats those less fortunate.
cheezel308 Offline
#5 Posted : Thursday, 7 October 2010 2:16:29 AM(UTC)
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Ouch........no good news here.
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