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CDN38

Member Since: 14 Nov 2014
Location: Courtenay, BC
Posts: 729

What is the best primer for aluminum?

What is best on aluminum? Self etching or 2 part epoxy primer?

I had always thought self etching, however some local bodyshops are saying it's better to use 2 part epoxy. I defer to the country that paints more aluminum vehicles than anywhere else in the world for the correct answer....

8th Sep 2015 4:44am

ian series 1

Member Since: 17 Nov 2014
Location: south
Posts: 3127

2008 Defender 90 Puma 2.4 CSW Bonatti Grey

I've always used an etch primer (had good results with PPG)
And never had any adhesion problems.

80" 80" 86" 88" 90"

Wanted, Forward Control Anything considered.

8th Sep 2015 5:49am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20378

Yes, etch primer.

You may wish to use a fine hi-build primer on top though as I find etch primer rather 'absorbant' so takes up the paint more than you'd expect.

I have always just made sure I've had more paint on hand.

All depends on how you lay it down too.

My sub grille was cast Alu:

Click image to enlarge

Not a great quality photo but it's been brilliant no problem at all.

I use Autotek etch but each man has his own preference.

8th Sep 2015 8:56am

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