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Shelf Life of Etch Primer

Started by _73LJWhiteSL_ , Apr 16 2011 04:35 PM

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10 replies to this topic

#1 _73LJWhiteSL_

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Posted 16 April 2011 - 04:35 PM

Gday all,

I am hoping to get to and rub the LC back to bare metal and etch prime it, however I've just discovered on the datasheet for the Etch primer I have that I has a 12 month shelf life. I opened it and used a little back in Late 2007.

I'm just wondering what peoples thoughts are. I'm leaning towards tossing it out, but just want to hear a few peoples opinions before I throw away nearly 4 litres of etch primer. I also have 4 litres primer/filler of the same brand but this has not been opened. My thoughts are if it has 'expired' its gonna screw up the rest of the paint job so better to get a new tin, but if it is ok I don't want to waste money.

Datasheet for Etch Primer (PDF)
Datasheet for Primer/Filler (PDF)

thanks

Steve

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#2 _Bomber Watson_

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Posted 16 April 2011 - 05:18 PM

Open the tins and asses the situation.

The tin of etch you opened is probably #@$^%&, if its gone ultra thick or glunky chuck it.

The tin of primer filler on the other hand is probably fine, at the end of the day the stuff sits in warehouses for up to a year before you get it.

All summed up 1k etch is cheap as shit so if its rooted chuck it, especially a not so great brand like concept. I recon your primer filler will be ok though. So long as you have stored them correctly.

Cheers.

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#3 _73LJWhiteSL_

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Posted 16 April 2011 - 05:40 PM

Thanks bomber. I will open it up and have a look and see if its gone all thick or lumpy.

Whats your preferred product for etch priming?

thanks

Steve

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#4 _Bomber Watson_

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Posted 16 April 2011 - 06:30 PM

I dont like any single pak etches.

Something like Protec acrylic primer filler seems to work better than any single pak epoxy etch i have ever used. Concept etc should have a simmilar product. Chances are your Concept primer filler is the comparable product.

Cheers.

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#5 _73LJWhiteSL_

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Posted 20 April 2011 - 10:37 AM

Yep, its rooted. Looks like its going in the bin.

Posted Image

Steve

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#6 _Quagmire_

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Posted 20 April 2011 - 04:31 PM

take it to the tip
they can recycle it and don't like tins of paint in the bin anymore

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#7 _Bomber Watson_

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Posted 20 April 2011 - 09:05 PM

That looks ok???

Stir the crap outa it and see what happens.

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#8 _uncleian_

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Posted 20 April 2011 - 09:06 PM

use a paint mixer in a drill and it will be good

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#9 _73LJWhiteSL_

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Posted 20 April 2011 - 11:57 PM

Ok so you guys reckon a bit of stirring and it will be ok? That would be good to hear, because if its ok and the humidity drops a bit i'm gonna have a go getting it on the car.

The Datasheet (link in first post) suggests up to 40% reduction with thinners. So That means I use up to 60% etch and 40% thinners? Or should I just use straight etch? Sorry to sound a bit green, I'm not sure how to mix it, and my last attempt I think I put way too much thinners in.

Thanks

Steve

Edited by 73LJWhiteSL, 21 April 2011 - 12:05 AM.

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#10 _Bomber Watson_

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Posted 21 April 2011 - 05:43 AM

Yep and yep.

If after continued stirring it looks strange still then chuck it. The way it is there is just settled, resin on top and clay to the bottom (primer is basically resin clay and talc).

That should stir up though.

And yeah 40% thinners means 60% paint 40% thinners. You can use less thinners but i like spraying etches real thin.