 The right way to close up a welding project, Primer? Weld Through? Weld putty? POR15? |
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| ctc911ctc |
 Sep 26 2018, 05:41 PM
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Senior Member  Group: Members Posts: 893 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States 
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Hi,
I am looking for definitive guidance and perhaps a pointer to a thread on this topic. We have finished all of the welding on metal that was primed with weld-through. We will now grind the welds. Is this the correct thing to do in this order? Zinc Primer Weld Weld some more plug up the holes with weld or epoxy (screw holes and small gaps) Grind the weld and expoy smooth (smoother) Treat the welds with 3M weld putty spray another coat of Primer Coat with POR15 Do I have this right? Flame ON!!!! (IMG:style_emoticons/default/sawzall-smiley.gif) (IMG:style_emoticons/default/ar15.gif) |
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| Andyrew |
Sep 26 2018, 11:16 PM
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Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California
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QUOTE(ctc911ctc @ Sep 26 2018, 04:41 PM)  Hi, I am looking for definitive guidance and perhaps a pointer to a thread on this topic. We have finished all of the welding on metal that was primed with weld-through. We will now grind the welds. Is this the correct thing to do in this order? Zinc Primer Weld Weld some more plug up the holes with weld or epoxy (screw holes and small gaps) Grind the weld and expoy smooth (smoother) Treat the welds with 3M weld putty spray another coat of Primer Coat with POR15 Do I have this right? Flame ON!!!! (IMG:style_emoticons/default/sawzall-smiley.gif) (IMG:style_emoticons/default/ar15.gif) POR15 works best directly to metal, as its a rust converter and is very "sticky". Most people no longer use POR15, especially if its on bodywork. If its a product you want to use (And I wont fault you for wanting to use it, I have it on my floorpans) then I would do your zinc primer, all your metal work. Por 15, then any sealers, primers, and topcoats. I would not use POR15 on bodywork. I would however use a primer sealer. \ Do all your metal work. Once done, clean your body and apply a primer sealer (This is typically a non high build primer). Tint it or have it tinted in another color than your primer fillers. This way when you get to it, you know to stop sanding and add more primer filler. At this point you can apply a high build primer or bodyfiller, however note you do not want to break through your primer sealer as that is your moisture barrier. I would reccomend going with a high build primer directly over primer sealer, then bodyfiller, then rough sand, followed by another layer of high build primer and guide coat. When its all said and done a final layer of primer blocked to give a consistant base color (Tinted on the greyscale to match your final color), then final paint. Lots of work and materials to do it right.. Theres a reason this type of paint job costs 10k... There is typically 3k in materials! |
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Posts in this topic
ctc911ctc The right way to close up a welding project Sep 26 2018, 05:41 PM
ctc911ctc Thank you Andy!
To be clear, this is for floo... Sep 27 2018, 07:05 AM
worn
Hi,
I am looking for definitive guidance and per... Sep 27 2018, 01:22 AM VaccaRabite Weld. Grind. Etching primer or epoxy sealer.
Th... Sep 27 2018, 07:29 AM rjames
POR15 is not a rust converter, it's a rust e... Sep 28 2018, 09:35 AM Tdskip POR15 goes over properly repaired bare mental only... Sep 28 2018, 02:45 PM jmitro agree with rjames and Tdskip. POR15 works great f... Sep 28 2018, 03:26 PM Rand Por15 is garbarge. If you have real rust, cut it o... Sep 28 2018, 03:53 PM worn
Por15 is garbarge. If you have real rust, cut it ... Sep 28 2018, 04:56 PM cuddy_k Ospho is phosphoric acid, not sulfuric. With all t... Sep 28 2018, 05:15 PM Rand Oshpo works Ian. Yes phosphoric (my bad for saying... Sep 28 2018, 05:44 PM cuddy_k
Oshpo works Ian. Yes phosphoric (my bad for sayin... Sep 28 2018, 09:32 PM bbrock I just came inside from treating all the internals... Sep 28 2018, 07:41 PM |
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