Priming and sealing a painted print (piefed.social)

submitted 4 months ago* (last edited 4 months ago) by nigel@piefed.social to c/3dprinting@lemmy.world

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I'm about to paint a PLA 3D print for the first time, and while there is some advice on what primer to use (an automotive etching plastic primer seems to be it), I've not see anything but hand wavy "add a layer of clear coat" for sealing.

Does anyone have any advice on a matte finish clear coat product that works well, as much so I know I have the right class/type of product?

Also, is there much difference between the products from hobby shops vs hardware stores? I can imagine the hobby ones are at a consistency for painting fine details, but it may also all be the same thing.

Thanks

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[-] nigel@piefed.social 1 points 4 months ago

Thank you for this. I'm actually trying a Rust-Oleum primer for this, so I'll check out their varnish too. And I'll get setup PPE wise.

Regarding the print, this one is a pirate chest to be used as a money box for my son. Other than the hinge there are no really moving parts, but I expect it'll get banged around a bit, hence thinking I need the clear coat at all.

this post was submitted on 16 Jan 2026

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