Rust-Oleum 249418 Automotive Sandable Primer Spray, 12 oz, Black

I recently switched from a grey primer to Rust-Oleum’s black sandable primer for all my 3D-printed helmets and props, and I’m genuinely impressed. First off, the price is great—this 12-ounce can won’t break the bank, even when you’re covering full-size pieces. I sprayed two light coats on a full-scale helmet and still had plenty left over for a half-scale mask, which felt like a real bargain compared to other brands I’ve tried. What really sold me was the spray consistency. The aerosol tip delivers a smooth, even mist every time—no sputtering, no drips, no frustrating runs to sand out later. Even on tricky curves and recessed details, the primer settles perfectly, filling in light layer lines without obscuring fine sculpting. It’s forgiving enough that you don’t need perfect technique to get a great result. But the best part? The deep matte black finish makes imperfections practically leap out at you once you start sanding. Any high spots, pinholes, or rough patches are instantly obvious against the dark background—something I missed for years when using lighter greys. That little bonus has saved me hours of worrying over unseen flaws and made my final paint jobs much smoother. If you’re serious about prop-making or automotive work on plastic—and especially if you’re on a budget—give this black primer a shot. It sands down silky smooth, bonds like a champ, and really highlights spots that need a little extra love. I’m sold: it’s affordable, effective, and has earned a permanent spot in my workshop. Five stars from this avid maker!

Awesome product per ounce

Good buy

Good primer, but be aware that it’s the blackest gray primer I’ve ever applied.

High quality primer and sands really well.

Great quality primer with very good adhesion and coverage. Sticks to multiple surfaces like wood, plastic (PLA/PETG/ABS etc.) and metal without problems and dries even and very fast. We bought it multiple time and will do so in the future.

Good product

ok

I've bought this over and over again because it works like a charm

Good quality and fast delivery

Solo se pudo usar una vez, al intentar usarlo con una segunda figurita dejo de funcionar la lata, y no hubo forma de solucionar el problema.

Really good quality paint. This one in particular adheres very well and does what it says. Really happy with my purchase and considering buying more.

Not sticking to 3D printed parts in PLA.