 Consensus on Lap Joint Weld Prep? |
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| bkrantz |
 Dec 17 2019, 09:45 PM
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#1
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914 Guru  Group: Members Posts: 7,838 Joined: 3-August 19 From: SW Colorado Member No.: 23,343 Region Association: Rocky Mountains 
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So based on experience and expert knowledge, what's the best way to prep metal for lap joints, especially with plug welds? No paint or treatment? Ospho? Weld-through primer? And what about seam sealant after welding before paint?
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| FourBlades |
Dec 18 2019, 02:49 PM
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#2
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From Wreck to Rockin Group: Members Posts: 2,055 Joined: 3-December 07 From: Brevard, FL Member No.: 8,414 Region Association: South East States
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Weld through primer is a misnomer in my opinion. Maybe "weld nearby" would be better. Much better results if you remove it from where the weld bead will land. Maybe it does not burn away from the surrounding areas as much as other paints or it leaves behind zinc around the weld area? Heating up zinc to a vapor and breathing it is not a good idea health wise so take precautions. John |
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Posts in this topic
bkrantz Consensus on Lap Joint Weld Prep? Dec 17 2019, 09:45 PM
cary Metal : ?
Old on old ?
New on Old ?
New on new ?
... Dec 17 2019, 11:22 PM Literati914 Scuff to clean metal, then phosphoric acid, let dr... Dec 17 2019, 11:42 PM
bbrock
Scuff to clean metal, then phosphoric acid, let d... Dec 18 2019, 09:00 AM
FL 000
This was my process too. Only thing I'll ad... Dec 18 2019, 01:43 PM BeatNavy
(I've paid good money for Weld Thru primer th... Dec 18 2019, 04:06 PM Costa05 Definitely no expert here but I lap welded my fron... Dec 17 2019, 11:54 PM Tdskip UPol high zinc does not burn back much it at all i... Dec 18 2019, 11:18 AM cary I use the same U-Pol weld thru primer.
But it only... Dec 18 2019, 02:09 PM Superhawk996 Just a generalized statement.
Avoid lap welds i... Dec 18 2019, 03:58 PM bretth Weld through primers I have used always contaminat... Dec 18 2019, 04:18 PM doug_b_928 I've been following a similar procedure to mos... Dec 18 2019, 04:21 PM rjames FCA Explains Ban on Weld-Through Primer Dec 18 2019, 08:27 PM doug_b_928 Here's a link to a discussion I had a couple o... Dec 18 2019, 09:38 PM bkrantz Thanks, everyone. Dec 18 2019, 11:06 PM mb911 The ban link is a good one.. Remember steel melts ... Dec 19 2019, 05:52 AM |
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