Painters help needed!! silicones problem!!!

ok so back from the workshop from another wasted painting session, my problem is im having a big problem with silcones (fish eyes) on the New origin overfenders i bought.

so this is what ive done so far and im still having the problem

session 1

-sanded overs
-prep wiped
-primered
-rubbed down
-prep wiped
-painted

nearly instantly doing the first coat (after the light coat) silcones appeared, especially badly on one of the overs

session 2

paint was mixed this time with Silicone stopper

-sanded down the paint to flatten out the silicones , still had paint on most of the overs after
-washed with washing up liquid (supposedly brilliant for stripping any waxes etc)
-prep wiped
-painted

and again it happened instantly, i could actually see the paint bubbling in front of me :/


my question is, what the hell can i do to stop them!! should i just lightly rub down the paint that is on now and just layer on more paint till they are gone altogether?

are you going direct from the compressor? any filter or anything?
and don't let the panel wipe dry wipe one with one cloth, wipe off straight away with another.

Wet rub only thing that gets rid of reactions or maybe good coat of primer, but once had a spurious spoiler for
A passat that had to skim the hole thing with filler to stop reactions

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Originally Posted by johnmaloney88

are you going direct from the compressor? any filter or anything?
and don't let the panel wipe dry wipe one with one cloth, wipe off straight away with another.

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you see, ive painted wings , skirts and a front bumper and have had no problem so i dont think its a compressor issue, i even painted the skirts after the overs on the same day and no issue! thanks for the input tho man

Quote:

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Originally Posted by Duck Drift

Wet rub only thing that gets rid of reactions or maybe good coat of primer, but once had a spurious spoiler for
A passat that had to skim the hole thing with filler to stop reactions

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had a good coat of primer! maybe will need more tho

There's an anti-silicone you can add to the paint

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Originally Posted by pole drift

There's an anti-silicone you can add to the paint

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if you read the OG post dude you will see i used that joe!

ya if you've painted other parts with no problem then it's the panel. you might consider barcoating it.

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Originally Posted by nikkisixx69

if you read the OG post dude you will see i used that joe!

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I cant read

fire up a pic to we see,, is your compressor close to where you are painting?? they exhaust a lot of oil vapour,,

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Originally Posted by martycturbo

fire up a pic to we see,, is your compressor close to where you are painting?? they exhaust a lot of oil vapour,,

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compressor is in another room! ill see if i have a pic! as previously said, ive painted everything else with no issues

Quote:

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Originally Posted by nikkisixx69

compressor is in another room! ill see if i have a pic! as previously said, ive painted everything else with no issues

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ah well that rules that out<< have you bled it lately and do you have a water trap,,
even with my one fitted at the bodyshop I used to get the odd re-action, more so with white for some reason, fitted a wee filter at the gun also and that stopped all,,
http://i.ebayimg.com/t/Spray-Gun-Air...,PR-Q~~_35.JPG

Quote:

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Originally Posted by martycturbo

ah well that rules that out<< have you bled it lately and do you have a water trap,,
even with my one fitted at the bodyshop I used to get the odd re-action, more so with white for some reason, fitted a wee filter at the gun also and that stopped all,,
http://i.ebayimg.com/t/Spray-Gun-Air...,PR-Q~~_35.JPG

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i know your an excellent painter dude, but im pretty sure it aint the compressor or lines etc. like i painted sideskirts directly after the first reaction on the overfenders, same paint and all, and the skirts came out perfect! it has to be the panel

its a pain in the ass,, just trying to rule out the obvious things,, most silicon re-actions I come across are from trim restorers and tyre shines etc on the pannel,, but the washing liquid, wet sanding and panel wipe that you've done normally get rid of it,,
read through what you've done again there with prep,, sounds perfectly ok,,

Quote:

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Originally Posted by martycturbo

its a pain in the ass,, just trying to rule out the obvious things,, most silicon re-actions I come across are from trim restorers and tyre shines etc on the pannel,, but the washing liquid, wet sanding and panel wipe that you've done normally get rid of it,,
read through what you've done again there with prep,, sounds perfectly ok,,

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tis a pain in the balls! and i thought the anti-silicone stoppers would do the trick today but nope! does it make any difference that the panels were new?

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Originally Posted by nikkisixx69

tis a pain in the balls! and i thought the anti-silicone stoppers would do the trick today but nope! does it make any difference that the panels were new?

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there's silicone in the fibreglass mould release agent from what i read on the internets

had the same issue on a mates car a couple months ago with new quarters - sprayed primer - fish eyes - wiped it off with thinner on a rag a few minutes later - panel wiped again - primed again fish eyes again - thinner on a rag again to take the primer off.. we then scotched the whole thing again dipping scotch into panel wipe - panel wiped normally again and it was grand then....

I'm surprised you're getting fish eyes in the paint but you didn't when you primed ?

Something must have come into contact with the primed surface - maybe you were touching the back of the panel with a rag you're wiping the painting surface with and there's silicones on it?

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Originally Posted by ELV-iS

there's silicone in the fibreglass mould release agent from what i read on the internets

had the same issue on a mates car a couple months ago with new quarters - sprayed primer - fish eyes - wiped it off with thinner on a rag a few minutes later - panel wiped again - primed again fish eyes again - thinner on a rag again to take the primer off.. we then scotched the whole thing again dipping scotch into panel wipe - panel wiped normally again and it was grand then....

I'm surprised you're getting fish eyes in the paint but you didn't when you primed ?

Something must have come into contact with the primed surface - maybe you were touching the back of the panel with a rag you're wiping the painting surface with and there's silicones on it?

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It can't be the rag man as im using individual prep wipes, so they only get used once! Im going to prime again, should I just prime over existing surface or should I strip it back to the gel coat?

I had same problem doing my audi. turns out it was the polish and sealer I was using on the car. caused bad fish eyes :( nearly ended up in full respray.

How are you heating your shed??

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Originally Posted by pole drift

How are you heating your shed??

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this man is onto something already. the likes of a space heater hen first started blows out unburned fuel and the particulets can land on the panel causing problems.

another one I know of is to watch for certain washing liquids as soon have additives to protect skin and stuff like that. I will try find the vid where I found this info :)

first few seconds in this video

http://www.youtube.com/watch?v=zoM0bFFDAVg

Just my 2 cents ! you dont have hair gel or after shave on while doing it? ( silly i know but iv seen it a few times)

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Originally Posted by GTSr32

Just my 2 cents ! you dont have hair gel or after shave on while doing it? ( silly i know but iv seen it a few times)

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Probably spunk it gets everywhere

Any Update on this?
I agree with the Barcode Statement said early it will stop all if not most reactions/problems could be the most silliest of things causing this reaction like particles in the air or the room your spraying etc
Hope you get this sorted

Just developed a few patches of these on my own car in lots of different spots. Noticed them during last wash, as they weren't there before. 2 years after it was resprayed as well. Any one know what might have caused this?

looks very like the image below except the paint is black/gunmetal.

http://www.chemtrend.com/sites/defau...composites.jpg

maybe some chemical reaction? did you use anything new/unusual in terms of products etc?

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Originally Posted by Zomby

Just developed a few patches of these on my own car in lots of different spots. Noticed them during last wash, as they weren't there before. 2 years after it was resprayed as well. Any one know what might have caused this?

looks very like the image below except the paint is black/gunmetal.

http://www.chemtrend.com/sites/defau...composites.jpg

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that looks like micro-blistering. it happens when there's trapped moisture in the undercoat like primer. when they painted it there must have been moisture in the air line or if they wet sanded the primer and didn't let it dry properly, primer is porous so soaks in water.

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Originally Posted by johnmaloney88

that looks like micro-blistering. it happens when there's trapped moisture in the undercoat like primer. when they painted it there must have been moisture in the air line or if they wet sanded the primer and didn't let it dry properly, primer is porous so soaks in water.

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Thanks for the info! Is it normal for this to rear it's ugly head even 24 months after painting?

@Lady89: no haven't used any new chemicals, only ever washed with the same shampoo on all cars.

Anything that can be done for them short of a respray?.

Thanks

Quote:

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Originally Posted by Zomby

Thanks for the info! Is it normal for this to rear it's ugly head even 24 months after painting?

@Lady89: no haven't used any new chemicals, only ever washed with the same shampoo on all cars.

Anything that can be done for them short of a respray?.

Thanks

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happened to my carina before, was at least a year or two after it was painted. the weather was cold over the winter and my complete wing and bonnet bubbled up like hell. nothing apart from a respray will cure it.

think the problem your having man is the meterial your spraying on to as u said the skirts cam out fine it was just the overs wat id do sand it back down while wearing latex gloves there are oils and greases in your fingers then rub down with de greaser then prime it then wet sand the primer smooth then dry and rub down with de greaser and paint also wat type of paint you using like solvent bases water based 2pk??? and last thing dont spray unless the temp in the room is at least 10 degrees