Rust-Oleum Automotive Stops Rust Filler & Sandable Spray Primer, Gray

Good primer that fills small grooves and you can sand

Looks.great

Awesome

Having used various products for 3D prints, the Rust-Oleum 260510 Automotive 2-in-1 Filler & Sandable Primer stands out as one of the best. Its rich, full color provides a stellar base for brush painting, ensuring that the subsequent paint layers adhere well and showcase their true colors. One of its key strengths is its sandability, which allows for a smooth finish, especially when paired with a putty filler for added smoothness on 3D prints. That being said, there's a slight drawback: the price. Given the quality of the product, it's understandable, but it can feel a bit steep, especially when working on larger projects where the primer can get consumed rather quickly. Nonetheless, for those willing to invest in a high-quality primer for 3D printing projects, this Rust-Oleum offering is definitely worth considering.

Wow this primer sprays reallyt nice and smooth. Application was easy as well.

Makes a solid primer coat.

My go to primer. I spray guitar bodies with this even if I use an all in one paint, never had an issue. Never had a run with this primer, it sands smooth fast and easy, and sticks with very little prep.

Good quality

I’ve been using Rust-Oleum Automotive 260510 12-Ounce primer spray to coat 3D printed models (mostly PLA) in preparation for fine sanding and painting. So far, I’m very happy with the results. It applies smoothly and evenly when you follow a few key tips: - Keep the can about 30 cm (12 inches) away from the model - Apply several thin coats instead of one heavy layer - Allow proper drying time between coats This approach prevents drips, runs, or pooling, and makes subsequent sanding much easier and more effective. The primer adheres well to PLA, provides a solid base for paint, and doesn’t seem to react negatively with the material. I may update this review later after more long-term use and painting, but at this point everything is performing exactly as hoped. Highly recommended for anyone priming 3D prints. 5 stars!

Don't think much it's an excellent product just buy it

Best primer I've ever used. Almost wish there was a spray paint that worked just as well. Really even coating application, dries quickly and fills even better! Was able to use one can to generously coat four 20" wheels and easily filled the road rash on all rims.

Perfecto para el postprocesado de impresiones 3D. Permite ocultar las líneas de la impresión y después de una lijada con lija de 400 o más fina, deja una superficie lisa. Puedes dar varias pasadas y deja la superficie lista para el pintado. Yo lo he utilizado con pintura vinílica o con laca en aerosol. Con ambas funciona bien.

Sprays evenly and fills small imperfections pretty well. Sands nicely after drying and worked great for prep before paint. Good coverage, but make sure to apply light coats to avoid runs.