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| | | | Joined: Oct 2010 Posts: 111 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2010 Posts: 111 | Just wondering how some of you work with thinner pitted metal The fenders on my 46 are in good shape except for a couple rough patches around the headlights. I'm afraid to grind down too deep.
Want to see how you pros do it
Thanks in advance
Ken | | | | | Joined: Mar 2008 Posts: 3,750 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 3,750 | Ken,I'm no pro,but I imagine lead loading after treating the rust might be the answer.
The only other way would be to cut out the affected areas and replace them but I'm sure someone more qualified than I will chime in soon....
1950 Chevy Advance Design 3100 in ScotlandIn the Stovebolt GalleryMore pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.
| | | | | Joined: Jul 2005 Posts: 946 'Bolter | | 'Bolter Joined: Jul 2005 Posts: 946 | If I had a super thin area I would rather bite the bullet and cut it out than try to band aid it. I think you will sleep better at night knowing it was done right. Just my opinion. | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 |
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| | | | | Joined: Nov 2004 Posts: 266 Custom Title | | Custom Title Joined: Nov 2004 Posts: 266 | If it's lightly pitted, soda blast it to bare steel, then start applying high build primer. Sand the surface back down between coats. This will reveal the high/low spots. Keep priming and sanding until the surface is flat and smooth again. A thin coat of body filler can speed up this process before the high build. If the spot is really bad, it's better to cut it out and weld in new steel.
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| | | | | Joined: Oct 2010 Posts: 171 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2010 Posts: 171 | Lead is the best....since we learned "how to" from an old timer I will never use bondo filler again, well maybe in just a few cases. Try to learn to used lead, you'll be surprized how easy it is!
....David
| | | | | Joined: Oct 2010 Posts: 111 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2010 Posts: 111 | | | | | | Joined: Jul 2011 Posts: 785 'Bolter | | 'Bolter Joined: Jul 2011 Posts: 785 | Soda blasting will only remove paint, it is not aggresive enough to clean rust scale out of the pits.
Two options:
You'll need a sandblasting media more aggressive to insure all the rust scale is gone. Then check to insure the metal is still structurally sound with an ice pick. If the pick goes through, time to weld in some new metal. If it does hold the ice pick, epoxy prime.
My preference would be to replace any pitted metal with new stuff. Metal is cheap to install before the paint goes on. Rework gets expensive. | | |
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