Self Etching Primer

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ridekorn
Posts: 5
Joined: Tue Nov 26, 2019 9:34 am
Location: CA

Self Etching Primer

Post by ridekorn »

I have decided that I am going to prime my build. I went a workshop and the guy there recommended using automotive self etching primer. However There are a ton out there and knowing nothing about them, I was wondering which one other people were using or if it even matters and all of them are pretty much the same? The one I was looking at was this https://www.autozone.com/paint-and-body ... 246429_0_0. Thanks ahead of time.

ebrunye
Posts: 51
Joined: Mon Nov 25, 2019 9:33 am
Location: San Diego

Re: Self Etching Primer

Post by ebrunye »

I used this one on my empennage, and this is the one that builders who use rattle can self etching primers typically use. That being said, its total junk in my opinion. It scratches off easily, which kind of defeats the point.

I know a lot of people have their opinions on this issue, and really all the viewpoints are correct in their own way. I pretty strongly believe if you are going through the effort to prep and prime the parts, do it with good epoxy primer. The prep work for priming is the hard part consuming all the time, not the actual priming.

The aluminum Sling uses is almost completely corrosion resistant without any treatment though, so I chose to stop priming altogether. I wrote a more in depth post about the aluminum on this forum somewhere already, I think it's in this priming/painting section.

ridekorn
Posts: 5
Joined: Tue Nov 26, 2019 9:34 am
Location: CA

Re: Self Etching Primer

Post by ridekorn »

Thanks. I saw the other post but was never sure on the actual can that others used. I appreciate the info, just trying to do as much research as I can while I wait for my kit to get here :)

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PhilipRueker
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Re: Self Etching Primer

Post by PhilipRueker »

Yes the Rustoleum Self Etching Primer is what most of us use. I'm using it on mating surfaces.

Matthew did an experiment when he started his build with a few of different primers - https://sling4tsibuilder.wordpress.com/ ... nt-update/

A lot of it comes down to good prep, but as Evan said, it ultimately comes down to personal preference.
Building a Sling TSi in my Garage.
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