8 replies to this topic

[Pitcrew6464]

Well i have run into a major problem!!!!!

Im gutted did seem to all be going a little too smoothly!

After applying stonechip a couple hours later it as reacted badly and started to peel off!!!


Right i sanded then panel wiped body, Mipa 2K-Transparent Sealer, Mipa 4+1 Acrylfiller HS primer then the stonechip upol gravi tex plus hs
bought all above from same supplier these were the reccomended.
its not all over only in some ares and seems to peel off all the way down to the metal, i will leave it all to dry/react and see what the damage is tommorrow may cover the whole floor

any ideas?









I was thinking once dryed sand all the way back then follow the same process maybe there was / is some sort of grease of contaminant on the body?!?! god knows


any advice would be appreciated

Edited by Pitcrew6464, 04 July 2010 - 06:48 PM.

[Pauly]

Mipa 4+1 Acrylfiller

Dont know much about this stuff, but the name says to me it's acrylic? From experience acrylic reacts really bad, its used a lot in aerosol paints and when ive sprayed over aerosol paint its always reacted.

Might not be that though but I would put a bet on it.

[mini670]

Bugger about that mate.
Something similar happened to my mates spraying recently. He recokns he did not let the primer and topcoat dry and harden fully before applying the stone chip. His was patchy and seemed to be in areas where it had gone on thicker, other areas dried ok.
He ended up taking it off and starting again

[Pitcrew6464]

Bugger about that mate.
Something similar happened to my mates spraying recently. He recokns he did not let the primer and topcoat dry and harden fully before applying the stone chip. His was patchy and seemed to be in areas where it had gone on thicker, other areas dried ok.
He ended up taking it off and starting again

pauly i will check the primer



Mini670 this may be case as primed this morning! my data sheet said dry in 3 to 5 hrs maybe i was too quick!

Gutted

Edited by Pitcrew6464, 04 July 2010 - 07:00 PM.

[minidaves]

looks like the paint was not dry before the stonechip was applied

dave

[Pitcrew6464]

i see a pattern accuring Damn will let it all harden the next weekend sand it all off hope it dont happen again

[panelbeaterpeter]

Never apply stone chip over paint or primer, a dust coat of etch is usually ok, but anything else and it will usually react like that, unless the paint has been on the panel for a long time. Bare metal, light dust of etch primer, let it dry very thoroughly, and then stone chip. Don't use panel wipe after the etch primer, and don't get panel wipe on the stone chip even after it's dried. It's temperamental stuff!

Edit: forgot to say, you can prime over stone chip once it's totally dry if you see the need, and that can be panel wiped etc same as any other primed surface.

Edited by panelbeaterpeter, 04 July 2010 - 09:21 PM.

[Pitcrew6464]

Cool thank you panelbeaterpeter just alot of mixed messaged in this painting game would it be ok to apply Mipa 2K-Transparent Sealer then stonechip?

[panelbeaterpeter]

Having never used it I couldn't say for sure, but I wouldn't advise it. What are you putting the sealer over, and for what reason? old paint? if it's just the old original paint then you should be able to stone chip over it with no probs, if it's bare metal then just a dust of etch is fine.