I get why you have to sand a surface before priming – it removes imperfections and creates a smoother surface. But why do you then have to sand again before painting? Surely by doing that you’re just sanding away all your primer?
In: 1
Ideally you are sanding the primer with a very fine sandpaper, so that you aren’t removing the primer. It’s to help set up the surface with exactly the texture you need for the paint to stick and look good.
When you sand a surface that’s been primed, you’re not sanding away all the primer. What you’re doing is creating a slightly rough surface that helps the paint stick better. It’s kind of like how Velcro works – the rough side of the Velcro sticks to the soft side. So by sanding the primed surface, you’re making it easier for the paint to stick and stay put, which means your paint job will look better and last longer.
When you sand a surface that’s been primed, you’re not sanding away all the primer. What you’re doing is creating a slightly rough surface that helps the paint stick better. It’s kind of like how Velcro works – the rough side of the Velcro sticks to the soft side. So by sanding the primed surface, you’re making it easier for the paint to stick and stay put, which means your paint job will look better and last longer.
Ideally you are sanding the primer with a very fine sandpaper, so that you aren’t removing the primer. It’s to help set up the surface with exactly the texture you need for the paint to stick and look good.
Ideally you are sanding the primer with a very fine sandpaper, so that you aren’t removing the primer. It’s to help set up the surface with exactly the texture you need for the paint to stick and look good.
It really depends on what you are working on. If you are painting something and you want the smoothest surface possible when you are finished (like most pieces of fine furniture or a car), you’ll sand after every coat, whether it’s primer, paint or clear-coat. The key with sanding primer is to use a very, very fine grit sandpaper and only remove the roughness of the texture, but a very minimal amount of paint.
When you sand a surface that’s been primed, you’re not sanding away all the primer. What you’re doing is creating a slightly rough surface that helps the paint stick better. It’s kind of like how Velcro works – the rough side of the Velcro sticks to the soft side. So by sanding the primed surface, you’re making it easier for the paint to stick and stay put, which means your paint job will look better and last longer.
It really depends on what you are working on. If you are painting something and you want the smoothest surface possible when you are finished (like most pieces of fine furniture or a car), you’ll sand after every coat, whether it’s primer, paint or clear-coat. The key with sanding primer is to use a very, very fine grit sandpaper and only remove the roughness of the texture, but a very minimal amount of paint.
It really depends on what you are working on. If you are painting something and you want the smoothest surface possible when you are finished (like most pieces of fine furniture or a car), you’ll sand after every coat, whether it’s primer, paint or clear-coat. The key with sanding primer is to use a very, very fine grit sandpaper and only remove the roughness of the texture, but a very minimal amount of paint.
Latest Answers