10 replies to this topic

[hanra]

As Ive said before I hate panel work... which means Im not up to speed with the process's involved.

As my engine bay is in bare metal currently, there are some areas that require a light skim of filler, such as the welds behind the bonnet hinges where rust repair sections have been welded in. Also there are some areas that have been pitted due to surface rust. So just light skims of filler will be used.

Should I.... apply the filler directly to the bare metal surface after giving it a good rub with a coarse sandpaper?

Or do I prime the enitre bay first then apply filler to areas that require it? Then re apply primer over the top?

I was told by the paint shop to use White Knight SLS Etch Primer?

http://www.whiteknig...ls-etch-primer/

I used this on my engine and they said it would be fine to use in the engine bay.

Is this the correct primer to be using in conjunction with filler?? And 2k paint for that matter?

Go easy on the novice please.... ! :-D

[r2160]

Whenever using putty, you I have always been told to prime first. Apparently bog has the ability to store moisture, so primer seals the metal first. I was taught, primer, bog, primer, paint.

I would talk to dirtbag about primer. He uses heaps of it.

cheers
Glenn

[ryano1911]

Glenn is almost completely right, The only thing that needs to be clarified is If your going to prime before bog it needs to be epoxy primed not just etch primer. It is ok to bog on to metal it's been done plenty in the past with no problems It really depends on what your tools and skill set are. Although being in North QLD you'll have a higher chance of getting moisture between the bog and the steel.

[hanra]

Ah ok interesting.

So If I was to etch prime first (sounds safer), then apply filler, what type of primer should I use before paint???

And yes it can be humid up this way although its not to bad at the moment.

Edited by hanra, 27 April 2012 - 08:59 AM.

[ryano1911]

Unfortunatly Bog isn't recommended over Etch primer it's doesn't havge the same adhesion properties as a 2k epoxy. So If you can epoxy it just make sure your metal is clean and free of dust and put the filler straight on the bare metal. Winter is probably the best time for you to do it Brad just don't do your bog mix to hot and moisture will be minimal.

[hanra]

Hmm ok. Thanks for this info mate. Sounds like I may have the wrong primer for the job??? So, could I bog to bare metal and then use this etch primer over the bog and bare metal? Or will I have to etch prime the majority of the engine bay and then the areas that have filler will they need 2k epoxy primer over them?

If I use this etch primer, will the entire bay also need 2k epoxy primer coated over it?

[hanra]

Ah ok interesting.

So If I was to etch prime first (sounds safer), then apply filler, what type of primer should I use before paint???

And yes it can be humid up this way although its not to bad at the moment.

I just read this again I think it sums up pretty clearly that I have no idea...




I think I will apply filler directly to bare metal, then spray the SLS etch primer over the the engine bay incl the filler? If thats ok. Then Ill have to apply a 2k epoxy primer over the etch? Is that correct? Why cant I understand this.....

[71xu1]

If not using 2k epoxy primer bog straight over bare metal if using 2k epoxy first then bog over it and then respray again with the epoxy or whatever primer filler you like to suit your topcoat.

Cheers Dave

[ryano1911]

Ok I'm not 100% on that SLS says it's goot for gal,copper, chrome nothing about normal steel but hey that could be just somthing they left off.
If you want to use etch just to stop the rust between bogging and 2k primer just use one like Protech's Etch pro it gives good protection comes in black or grey and it's not to dear. All you need to do then before bogging is either sand it off with some 80grit and start bogging then when your finished the bog work you can put it back over the bog and the metal.
Then when it comes time to 2k prime scuff it all up with no ruffer then 120grit and hit it with 2k primer filler, or take as much of the etch off without wrecking your repairs and 2k epoxy it then again scuff it up then 2k primer filler.
Hope that makes some sort of sense, it's a little harder to explain than to do

[hanra]

Nah Im with ya Ryan!!! Your a champ mate. Your input is greatly appreciated!!!!!!