![]() When rubbing fiberglass or aluminum filler you’re going to use a lower grit paper because they’re harder to rub. The type of paper you use will also change based on the type of filler you’re rubbing. Say it’s 80% there, you should move on to 80-120 grit paper.įinally, when rubbing your final skim, whether it’s filler or Bondo, you should try and finish with 180 paper. This will cut down the repair quickly and allow you to get the shape of the panel correct.Īs you get closer to the repair being finished. On bigger repairs with deep fills, you will want to sand the first fills with 40-80 grit paper. The paper that you use will vary based on the stage of repair. It’s common for technicians to use paper anywhere from 40 grit to 400 grit when sanding body filler. Sanding body filler can be a long process. ![]() What grit sandpaper to use for car body filler? If you want to be extra nice to the painter you could always go as high as 240-320, but 180 is the absolute lowest that a plastic repair should be finished with. Whatever you do, always make sure to finish in at least 180 grit. A lot of them form a hard layer on top of the filler which is time-consuming to sand with 180, in this case, I’ll hit it with a 120 before switching to 180. I’d then hit it with a 180 disc to smooth the plastic before the filler work. This will cut high spots and remove paint quickly. Most of the time I use 120 grit to sand and shape the area local to the repair. You’ll generally want to start off using 120-180 grit. You can get away with using 40-80 grit to tear down high spots and remove excess material when plastic welding but it’s not recommended. It’s way too harsh and will thin the material a lot. I’ve seen people go as low as 40 grit on plastic bumpers, trims, and moldings, but you definitely don’t want to do that. They say any lower damages the substrate, causing deep scratches and thinning material. P180 is the lowest grit that IMI recommends for sanding and shaping plastic. What grit sandpaper to use for a plastic bumper? There’s definitely a time and a place for both. I recommend having both of these grits in your toolbox if you’re doing any type of panel work. I try to use 80-grit paper as much as possible but there are times when 40-grit makes sense.Ĥ0 Grit will sand a car to bare metal quicker while keeping the panel cooler in temperature. We don’t want to damage the substrate! We’re trying to repair it. It’s very hard to remove these scratches by sanding them out and will almost always require filler or Bondo. The other problem with 36 or 40 grit discs is the scratches that it leaves behind. If you see sparks flying when you’re sanding, it’s cutting into the panel and weakening it. Unfortunately, if you have a rubbish brand of sandpaper and 80 grit disc will just tickle the panel.Ĥ0 grit paper is seen as too harsh of an abrasive. If you have a high-quality 80-grit sandpaper from Mirka or 3M it will remove the paint in no time. Nowadays, IMI, the institute of the motor industry swears by using 80 grit. ![]() If you speak to an old-school panel beater or body technician, they’ll probably tell you 40 grit. This is because the 80 grit doesn’t damage the substrate. The quickest and safest way is using P80 grit. The quickest way to sand a car to bare metal is to use P40 sandpaper. What grit sandpaper should I use to sand a car to bare metal? If you don’t use this rule, you will end up damaging materials and creating a lot more work for yourself.Īs you become more experienced you’ll know what you can get away with, but until then, it’s best to be on the safe side. The most important rule of auto body sanding is: Always use the least abrasive paper possible to get the job done. 1000+ Grit: Blending and sanding clear coat, removing imperfections & color sanding.400 – 800 Grit: Sanding primer & sealer (if required).120 – 320 Grit: Plastic bumper & fender repairs, shaping filler & glaze/glazing putty.40 – 80 Grit: Sanding to bare metal, removing paint & rubbing deep fills.What grit sandpaper should I use to sand car clear coat.What grit sandpaper to use to block primer before paint?. ![]() What grit sandpaper to use for car body filler?.What grit sandpaper to use for a plastic bumper?.What grit sandpaper should I use to sand a car to bare metal?.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |