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just spent all week stripping my subframe, thought id give por15 a try - subframes been sanded and throughly cleaned off with brake cleaner.

Used the prep ready liquid , did exactly as it says, rinsed it off with water, wiped it down, blew it off with airline , wiped again with brake cleaner

Painted with POR15

looked nice and then WHAM fisheyes all over, its now just a sticky mess that looks like ive painted over paint stripper

anyone else used it ??

pad4

Yep did you try going over it again ? That was the only time I had a reaction.

nope - 1st and only coat , went wrong before it even had chance to dry

Fisheyes indicate grease on the surface. I would suspect the brake cleaner.

On a related note, whenever I paint something, I mix in a bit of "fish eye eliminator", for example

http://www.ebay.co.uk/itm/LEVEL-IT-ANTI ... 2a1d4a041c
or
http://www.ebay.com/itm/Fish-Eye-Elimin ... a1&vxp=mtr

It is really amazing what this stuff does. I have seen demonstrations where they will paint directly on top of an oiled piece of metal, WD40 and silicone spray lube.

I've used it a few times and have never had trouble, sounds like the prep process to me also.

You did'nt decide to valet another car in between did you

brake cleaner is industrial trichoethylene - we have a special clean room we use for painting other stuff at work so im pretty clued up on how prep should be done - silicones etc are not allowed in the place so im 100% positive its not contamination from grease or anything, certainly not on the scale of the problem

painted something else last night thats just been sanded down to metal , no prep so lets what happens



me - valet a car , lol dont be silly

pad

Might have been something on the cloth you used?

Do you think the fish eye eliminator could do anything for this guy?

Conclusion - its a load of expensive crap

second coat has fish eyed on top of the first coat

painted some other stuff , por15 all gone shit , hammerite smooth is bob on

off to the blasters now

pad

If you were that clued up you would'nt be using brake cleaner to prep for paint

I have also noticed POR-15 is very susceptible to fish eyes., its weird stuff, a bit like powder coat when dry.

Maybe its very sensitive to static electricity or sommit....

In the end i decided it looks too plastic for a sympathetic resto...

J

cooper man wrote:If you were that clued up you would'nt be using brake cleaner to prep for paint

Right on brother!

You can't put more paint on a fish eye and expect it to cover...........If applied correctly the finish is matt, and perfect for spraying onto.

And would you like to explain to my why 1,1,1-trichloroethane (Proper brake cleaner) is not suitable as a degreaser

This is going to be interesting

Im all ears

.................

Will work perfectly well as a cleaner, but i'd expect the problem to be something to do with the chlorine in it.

Are you sure it is 1,1,1-Trichloroethane? It has been banned in the UK since 1998. You're allowed to use up old stock, but you shouldn't have been able to buy it since then.

Tim

por 15 is dulux
ITS POLYEURATHANE
just like hammerite smooth

all cheap and nasty gooey crap.

use 2k or epoxy....
brake cleaner dont cause fish eyes..its the same stuff panel wipe is made from

banned no - phased out yes and im pretty sure it is what it says it is on the tin

we also use methylenedichloride, tetrahydrafuran and all kinds of crap- all supposedly banned but you can still buy them all from the right places if youre an industrial user of sorts

any way - still waiting to find out why trich isnt a suitable degreaser ??

pad

any way - still waiting to find out why trich isnt a suitable degreaser ??

pad[/quote]

So am I, For many years I've been using brake cleaner for final cleaning of components before painting, & never had fish eyes on cellulose, smooth hammerite, synthetic enamel, wheel silver or engine paint. I've never tried POR15, always been happy with Hammerite. Brake cleaner was actually recommended to me to prevent getting fish eyes & I must admit some of it has come from the pound shop, but works perfectly!

yea we used to bath large alloy panels in trich before painting them (oh yes i used to be a paint sprayer) , only thing you could really trust to fully degrease and clean bare ally before painting

and ive been doing it wrong for all these years

How come then ????? (still no answer coming forwards)