 POR-15 tips, tricks, Any BTDT? |
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| Gint |
 May 25 2003, 11:22 PM
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#21
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Mike Ginter  Group: Admin Posts: 16,105 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains   |
QUOTE One more time, please-------------"What does "etching" mean? I hear it a lot - self etching primer etc., what does it actually do? " As the context implies, it chemically "etches" the surface of the metal. Especially important if the metal is smooth and has no roughness or "tooth" for paint to adhere to. That's the best I can do. I was hoping a friendly BBS chemist/metallurgist would pipe up and give a technical answer to your question. QUOTE similar to POR-15 that was called (IIRC) "Chassis Saver" Magnet Paints \"Chassis Saver\" link |
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| jdogg |
May 26 2003, 07:06 AM
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#22
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Member Group: Members Posts: 431 Joined: 28-January 03 From: Youngsville, NC Member No.: 204 |
Thanks. Gint. So one would would use an etching primer only on bare metal? Is it appropriate to use over old paint?
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| Gint |
May 26 2003, 09:44 AM
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#23
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Mike Ginter Group: Admin Posts: 16,105 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains |
From what I understand, etching primer would only be used on bare metal. There would be no point in applying it over paint. For that you "scuff" or lightly sand the paint with 400 or 600 grit before applying new paint or primer.
But I'm no expert. I'm learning this as I go. |
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