8 replies to this topic

[PaulColeman]

I know that a common cause of 'fish eyes' in the paint work is silicone but I've never had to deal with it before. I bought a new bonnet which had the black cataphoresis type paint on it and when I sprayed it with etch primer this morning I ended up with quite a few fish eyes in it (even though I panel wiped it beforehand). I know you can get an additive to counteract silicone but do I need to put it in with the high build primer and the top coat or just the high build. I'm going to use 2-pack paint for the high build and the colour but I'm not going to use a clear coat.

Thanks, Paul.

[sledgehammer]

slightly off subject - some deodorants have silicon in them , hair spray / gel as well

it's worth while avoiding them the day you spray - your going to smell of thinners anyway

just a thought

[PaulColeman]

I've been very careful to keep silicone out of my garage as I'm mid-way through painting my Lotus and I don't want the same problems on that. I suspect these panels had silicone on them from the factory although I'm wondering if the paint process they've used had silicone as part of the treatment?

Paul.

[jaydee]

Yes, the panels could be contaminated at the factory or at the dealer. Silicone and oil vapours are the evil when painting, maybe you used WD40 on the other part remote of the garage then you have fish eyes when painting..

[PAINTPOT]

dont use the additive ,we use to use this in the body shop along time ago ,it caused more harm then good.you only need a tier drop,overcompensate with this stuff and you are in big trouble .i recommend not to use this stuff.up to you.rub your primer down until all silicon has gone ,panel wipe down re prime.drain your compressor ,make sure no water in air line.

Edited by PAINTPOT, 06 November 2011 - 06:43 PM.

[sam7]

yeh not a good idea to use the anti silicone additive, once you start using the stuff you have to carry on using it in every thing or time you spray!!!
rub them out and primer it again and hopefully it wont come back.

[corrado vr6]

this happend to me with my primer on my bonnet was spraying with a diesel heater going that ran out of diesel and gave out loads of smoke, the finish had what i conluded after a search on google as fish eyes i took a chance and rubbed them out re primed, then guide coated, colour then lacqure with no effects later on this was done over 3 months ago with no effects since! hope that helps

[samsfern]

Wet Flat the primer back, using a fairly strong mix of water and fairy liquid, panel wipe, then have another go. Whenever I do bodywork, I always use a bit of fairy liquid in a bucket when flatting down or keying.

Edited by samsfern, 07 November 2011 - 02:10 AM.

[PaulColeman]

Okay, thanks guys for the tips. I'll rub it all down to bare metal and re-prep it.

Cheers, Paul.