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#1 |
Registered User
Join Date: Oct 2022
Location: Regina, Saskatchewan
Posts: 343
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Weld through Primer is made of Zinc - Wouldn't this be dangerous to weld?
Hey guys, I'm about to start rust repair on my cab this winter and picked up some weld through primer. I read the can it says it's a Zinc weld through primer.
Now I know welding galvanized steel is very dangerous because of the Zinc fumes and you have to grind it off. Wouldn't this Zinc weld through primer be dangerous then? What do you guys do?
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1971 Chev C10 - 250ci L6 w/3 speed on the floor Upgrades: Power Steering 3 Core Radiator 7 Hole Gauge Cluster Power Brakes (Incoming!!..) 1971 350 (Incoming!!..) |
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#2 |
Senior Member
![]() Join Date: Nov 2018
Location: Waterford California
Posts: 2,538
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Re: Weld through Primer is made of Zinc - Wouldn't this be dangerous to weld?
Put on a respirator like a car painter uses, not a dusk mask, and have a fan blowing the fumes away from you.
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#3 |
Senior Member
![]() Join Date: Jun 2022
Location: San Ramon,CA
Posts: 510
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Re: Weld through Primer is made of Zinc - Wouldn't this be dangerous to weld?
It turns into Zinc Oxide(white smoke) and it's definitely not something you want to inhale.
Technically, it's an irritant, which means you'd recover and not have long term problems if you did up, but you could be REALLY MISERABLE for a few days, so don't go there. https://www.cdc.gov/niosh/npg/npgd0675.html Respirators don't work great with facial hair, btw. |
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#4 |
Registered User
Join Date: Apr 2009
Location: newbury new hampsire
Posts: 2,069
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Re: Weld through Primer is made of Zinc - Wouldn't this be dangerous to weld?
Shave
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#5 |
Registered User
Join Date: Oct 2022
Location: Regina, Saskatchewan
Posts: 343
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Re: Weld through Primer is made of Zinc - Wouldn't this be dangerous to weld?
Interesting, thanks gents! So a vapor style respirator and fan, check!
I wonder how many people know the primer is made with Zinc. I've watched tones of videos of rust repair and no one seems to mention it at all.
__________________
1971 Chev C10 - 250ci L6 w/3 speed on the floor Upgrades: Power Steering 3 Core Radiator 7 Hole Gauge Cluster Power Brakes (Incoming!!..) 1971 350 (Incoming!!..) |
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#6 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,166
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Re: Weld through Primer is made of Zinc - Wouldn't this be dangerous to weld?
Whether it's weld through primer, factory paint, or epoxy primer you need to protect yourself from the fumes if your welding near painted metal.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#7 |
Senior Member
![]() Join Date: Jun 2022
Location: San Ramon,CA
Posts: 510
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Re: Weld through Primer is made of Zinc - Wouldn't this be dangerous to weld?
You'll see that perfectly white smoke if it's making Zinc Oxide, but tbh, there's nothing in burning primer I'd want to inhale anyway.
Fume extractor would be ideal, particularly if you're working indoors, but borrowing one might not be possible. |
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#8 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,444
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Re: Weld through Primer is made of Zinc - Wouldn't this be dangerous to weld?
I know of a guy who inhaled enough fumes to kill him, but he had burned the zinc off of a whole lot of galvanized pipe without protection.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#9 |
Senior Member
![]() Join Date: Jun 2022
Location: San Ramon,CA
Posts: 510
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Re: Weld through Primer is made of Zinc - Wouldn't this be dangerous to weld?
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