
Are you planning to give your old furniture a new look or starting a DIY woodworking project, and wondering “what grit for orbital sander” will get the job done? If you’re new to the world of sanding, the grit number can be quite confusing. The truth is, the right grit depends on the material you’ll be sanding and the level of coarseness you need to achieve. Think of grit as the level of roughness on the sandpaper.
It ranges from fine to coarse and affects how much material the sander removes. A higher grit number equals a finer grit, meaning it removes less material. A lower grit number is coarser and removes more material.
Choosing the right grit for your orbital sander not only saves time and effort but also ensures you get the desired finish. A fine grit such as 220 is suitable for finishing or smoothing surfaces, while a coarser grit like 80 or 100 is ideal for removing paint or rough wood. Keep in mind that you’ll need to start with a coarse grit and gradually work your way up to finer grits for a smooth finish.
So, before you start sanding, make sure you have a range of grits, starting from coarse to fine. Now that you know what grit for an orbital sander is suitable for your project, go ahead and get started. With the right equipment and grit, sanding can be a breeze, and you’ll achieve a professional-looking finish on your project.
Understanding Grit in Sandpaper
When it comes to using an orbital sander, choosing the right grit for the job is crucial. Grit refers to the coarseness of the sandpaper, and it is measured by the number of abrasive particles per square inch. The higher the number, the finer the grit.
When starting a new project, it’s important to choose the right grit to achieve the desired finish. For rough sanding and removing layers of paint or varnish, a lower grit, such as 60 or 80, is recommended. For smoothing out scratches or preparing the surface for finishing, a medium grit between 120-150 is ideal.
For finishing and polishing, a high grit between 220-320 is best. It’s important to note that using the wrong grit could result in damaging the surface or not achieving the desired result. When in doubt, start with a lower grit and work your way up until you reach the desired finish.
With the right grit and technique, your orbital sander can help you achieve a smooth and professional finish on any project.
Grit Sizes and Sandpaper Grades
When it comes to sandpaper, understanding grit sizes and grades is essential for good results. The grit size refers to the number of abrasive particles per inch or centimeter of sandpaper. The higher the number, the finer the grit and the smoother the finish.
The grades refer to the quality of the sandpaper and can range from rough to extra-fine (coarse, medium, fine, very fine, and extra-fine). Generally, coarse grits (40-60) are used for heavy sanding, while medium (80-120) and fine (150-180) grits are for smoothing and preparing surfaces. Very fine (220-240) and extra-fine (280+) grits are used for final sanding and finishing.
It is important to choose the right grit and grade for your project to achieve the desired outcome. Remember, sanding is a crucial step in any woodworking or DIY project, and using the right sandpaper can make all the difference.

Choosing the Right Grit for Your Project
Choosing the right type of sandpaper is essential for achieving smooth and polished surfaces. To make the right choice, it is crucial to understand what grit is in sandpaper. Grit refers to the number of abrasive particles on the sandpaper’s surface per square inch.
The higher the grit number, the finer the sandpaper’s surface and the smoother the finish it will provide. Different grits of sandpaper serve varying purposes, and choosing the right one is vital for the success of your project. Coarse grits, such as 40 or 60 grits, are ideal for sanding rough surfaces and removing old paint or rust.
Medium grits like 80 or 100 are suitable for smoothing surfaces and removing small imperfections, while fine grits like 150 or 220 are perfect for achieving a polished finish on surfaces. Understanding grit in sandpaper will help you achieve excellent results in your project.
Using an Orbital Sander
One of the biggest questions people have when using an orbital sander is, “what grit for orbital sander?” The answer depends on what you are trying to accomplish. Lower grits, such as 60 or 80, are useful for removing paint or heavy layers of material. Medium grits, like 120, are good for smoothing out surfaces and removing scratches.
Higher grits, such as 220 or 320, are best for finishing touches and achieving a smooth surface texture. Keep in mind that the coarser the grit, the more material you will remove, so be careful not to overdo it. It’s always best to start with a lower grit and progressively move up until the desired result is achieved.
Preparing Your Surface for Sanding
Preparing Your Surface for Sanding with an Orbital Sander is a crucial step to achieve a seamless finish on your woodwork or furniture. First, make sure to clean the surface thoroughly and remove any paint, varnish, or old finish. You can use a scraper or sandpaper to do this.
Next, use a fine-grit sandpaper to smooth any rough patches or imperfections. Applying a wood conditioner before sanding can help to even out the wood grain and prevent blotching. Then, attach the correct sanding pad to your orbital sander and start sanding in a back-and-forth motion.
Begin with a coarse grit sandpaper and work your way up to a fine grit for a smooth, even finish. Remember to sand with the grain to avoid damaging the wood’s natural pattern. Preparing your surface correctly will contribute significantly to the success of your woodworking or furniture refinishing project.
Sanding Technique with an Orbital Sander
Orbital Sander Sanding wood surfaces can be a tedious task, especially if it involves intricate details and contours. Luckily, an orbital sander can make this job much easier and faster. An orbital sander is a power tool that comes with abrasive sandpapers that rotate in circles.
It operates by vibrating in tiny circles, leaving a uniform and smooth surface finish. To use an orbital sander, first, secure the sandpaper to the sander’s base with its hook-and-loop fastening mechanism. Then, turn the sander on and place it onto the wood surface.
Move the sander in a back-and-forth motion, making sure to overlap each pass. This technique will prevent leaving uneven scratches and marks on the surface. Start with a coarse grit sandpaper and progress to finer ones to get a smoother finish.
Always wear protective gear like goggles and a mask to avoid inhaling sawdust and eye injuries. Using an orbital sander is an easy and efficient way to sand wood surfaces, making your DIY projects smoother and more professional-looking.
Tips for Achieving a Smooth Finish
If you’re looking to achieve a smooth finish when sanding, an orbital sander is a great tool to consider. It uses a circular motion to sand surfaces evenly, which can be especially helpful for larger areas. To get the best results, start with a coarse-grit sandpaper and gradually work your way up to a finer grit until you reach your desired smoothness.
Remember to use light pressure and keep the sander moving to avoid leaving marks or uneven spots. And don’t forget to wear proper safety gear, including a dust mask and eye protection, to protect yourself from any airborne particles. With a little practice, an orbital sander can help you achieve the smooth, professional-looking finish you’re after.
Summary of Grits for Orbital Sanders
When it comes to using an orbital sander, choosing the right grit can make a significant difference in the final finish of your project. But what grit is best for an orbital sander? The answer is it depends on the task at hand. For rough sanding, such as removing stubborn paint or roughening up wood, a lower grit such as 60 or 80 grit is ideal.
If you’re looking to remove scratches left by a coarser grit or want to smooth out your work surface, a higher grit ranging from 120 to 220 grit is recommended. Finally, for finishing touches and achieving a polished look, a very fine grit ranging from 320 to 400 grit can be used. Remember to choose the grit that aligns with your project, and if necessary, gradually increase the grit as you move from rough to fine sanding.
Coarse Grit (40-60)
When it comes to choosing the right grit for your orbital sander, it’s important to understand what each grit level does and when it’s best used. The coarsest grit available for these sanders is typically between 40-60. This grit level is best used for heavy-duty sanding tasks such as removing paint or smoothing out rough wood surfaces.
Because of its aggressive nature, it’s important to be careful when using this grit as it can quickly remove too much material if not used carefully. However, when used properly, it can save a significant amount of time and effort in getting your surface to the desired level of smoothness and can prepare surfaces for the next stage of sanding. Whether you’re a professional woodworker or a DIY enthusiast, understanding the right grit level for each sanding task is key to getting the best results possible.
Medium Grit (80-120)
Orbital sanders come in a variety of grits, depending on the intended use. Medium grit sandpaper, with grit sizes ranging from 80 to 120, is one of the most versatile options. It can handle a wide range of sanding tasks, from smoothing rough surfaces to removing old finishes.
The roughness of this grit is sufficient to strip away old stains and sealers, yet fine enough to leave a smooth surface that is ready for refinishing. When paired with a fine grit sandpaper, it can also be used for general woodworking projects, such as smoothing down rough edges or creating a smooth surface for staining or painting. Medium grit sandpaper is an essential part of any orbital sander’s grit collection, making it easier to accomplish various woodworking tasks with just one tool.
Fine Grit (150-180)
Orbital Sanders. Orbital sanders are versatile tools used by many DIY enthusiasts and professionals, capable of sanding, smoothing, and finishing various surfaces, from wood to metal. To achieve the desired finish, selecting the right grit is crucial.
A fine grit of 150-180 is ideal for light sanding and removing small imperfections, such as scratches, swirl marks, and blemishes. The aim is to create a smooth surface, ready for painting, staining, or varnishing. It is also useful for the final smoothing of curved surfaces, as it is less aggressive and will not remove more material than necessary.
Fine grits also mean a longer lifespan for your sandpaper, as it is less likely to wear out quickly due to heavy use. Remember to switch to a coarser grit first if the surface has substantial roughness or needs a lot of material removed. With the right grit and technique, using an orbital sander can produce high-quality results.
Conclusion
So there you have it folks, when it comes to grit for an orbital sander, you want to go for a grit that’s as tough and determined as you are. Just like how persistence and resilience are key to achieving success in life, having the right grit on your sander is crucial for achieving the smoothest and finest finishes on your woodwork projects. So whether you’re sanding a rough piece of wood or polishing up a piece of fine furniture, make sure to choose a grit that’s got the grit to match your own!”
FAQs
What grit is best for sanding hardwood floors with an orbital sander?
For sanding hardwood floors with an orbital sander, it’s recommended to start with 36 grit sandpaper, then move up to 60 grit, and finish with 100 grit for a smooth finish.
Can I use a lower grit sandpaper for my orbital sander?
It’s recommended to start with a coarse grit, such as 36 or 40, when using an orbital sander as it removes more material. Using a lower grit than recommended can damage the surface being sanded.
What type of sandpaper should I use for metal surfaces with an orbital sander?
For sanding metal surfaces with an orbital sander, it’s recommended to use aluminum oxide sandpaper with a grit between 60 and 120.
How often do I need to change the sandpaper on my orbital sander?
The frequency at which you change orbital sander sandpaper depends on usage and materials being sanded. As a general rule, it may need to be changed every 15-20 minutes of continuous use.
Can I reuse sandpaper on an orbital sander?
Reusing sandpaper on an orbital sander is not recommended as it will dull the abrasive grains and decrease the effectiveness of the sandpaper.
What is the difference between hook-and-loop and adhesive-backed sandpaper for an orbital sander?
Adhesive-backed sandpaper requires adhesive to stick to the sander, while hook-and-loop sandpaper uses a Velcro-like backing to adhere to the sander. Hook-and-loop sandpaper is easier to change and is less likely to leave residue on the orbital sander.
Can I sand paint off with an orbital sander?
Yes, an orbital sander can be used to remove paint, but it’s recommended to use a lower grit sandpaper, such as 60 or 80 grit, to avoid damaging the underlying surface. It may also be necessary to use a paint stripper beforehand.