Madness Sale 20% OFF On All Orders * Limited time only.

How To Sand Epoxy Resin


How to sand epoxy resin.


Working with epoxy resin can be a daunting task for the uninitiated. After all, it requires a lot of patience and practice to get the perfect finish. But once you have mastered the basics of handling this highly durable material, sanding your resin project should be a breeze. In this blog post, we will cover everything you need to know about sanding epoxy resin. We will discuss why sanding is important, what tools are needed, and how to properly prepare the surface for a smooth and even finish. So if you want to learn how to masterfully sand your next epoxy resin project, keep reading!


The benefits of sanding epoxy resin

When it comes to sanding epoxy resin, there are a few key benefits that make this process well worth your time and effort. For starters, sanding epoxy resin can help to create a smooth, even surface that is free of any imperfections. This is especially beneficial if you plan on painting or staining the resin later on.

In addition, sanding epoxy resin can also help to create a more consistent color throughout the material. This is because sanding helps to evenly distribute any pigment or dye that has been added to the resin. Without sanding, the colors in your resin can appear blotchy or uneven.

Finally, sanding epoxy resin can also help to create a more durable finish. A properly sanded and polished surface will be better able to withstand wear and tear over time. This means that your finished project will last longer and look better for longer periods of time.


How to prepare epoxy resin for sanding

In order to sand epoxy resin, you will need to first prepare the resin for sanding. This can be done by roughening up the surface of the resin with sandpaper or a file. This will help create a "tooth" for the sandpaper to grip onto so that it does not slip.

If you are using sandpaper, start with a coarse grit and then move to a finer grit until you have achieved the desired smoothness. If you are using a file, start with a coarse file and then switch to a finer file as needed.

Once you have prepared the surface of the resin, you can begin sanding. Start with a coarse grit sandpaper and work your way to a finer grit until you achieve the desired results. Remember to keep the resin dust free while sanding by using a vacuum or dustbuster type device.


The best way to sand epoxy resin

There are a few different ways that you can sand epoxy resin, but we think the best way is to use a wet/dry sandpaper. This type of sandpaper will allow you to sand the resin without clogging up the paper.

Start with a lower grit sandpaper and work your way up to a higher grit until you get the desired finish. If you're not sure what grit to start with, we recommend starting with a 60 grit and then moving up to a 120 grit.

When sanding, be sure to keep the sandpaper wet by dipping it in water frequently. This will help to prevent the resin from clogging up the paper and making it difficult to Sand.

If you're having trouble getting a smooth finish, try using a power sander. This will make quick work of any rough spots and help you achieve a nice, smooth finish.


How to sand epoxy resin by hand

To sand epoxy resin by hand, you will need:

- Sandwich bags
- Fine grit sandpaper (at least 2000)
- A work surface that can be easily cleaned or thrown away

1. Cover your work surface with a layer of sandwich bags. This will make cleanup much easier later.
2. Cut a piece of sandpaper to fit inside the sandwich bag.
3. Place the piece of sandpaper inside the bag and seal it shut.
4. Rub the bagged sandpaper over the epoxy resin until it is smooth to the touch.
5. Repeat steps 2-4 as necessary, until the desired level of smoothness is achieved.


Tips for sanding epoxy resin

If you're working with epoxy resin, there are a few things you should keep in mind when sanding. First, epoxy resin is very hard, so you'll need to use a coarse grit sandpaper to start with. You can then move to a finer grit as needed. Second, epoxy resin is also very brittle, so be careful not to sand too aggressively or you may end up with shards of resin. Finally, make sure to wear a dust mask when sanding epoxy resin, as it can be harmful if inhaled.


The different types of sandpaper to use on epoxy resin

There are three main types of sandpaper that can be used on epoxy resin:

1. PSA (Pressure Sensitive Adhesive) Sandpaper Sheets - This type of sandpaper has a sticky back that allows it to adhere to the surface being sanded. PSA sandpaper sheets are available in a variety of grits, from coarse to fine.

2. Wet/Dry Sandpaper Sheets - These sheets can be used either wet or dry, although using them wet will prolong their life. Wet/dry sandpaper sheets are also available in a variety of grits.

3. Silicon Carbide Sandpaper Sheets - This is the most aggressive type of sandpaper and should only be used if other types have failed to remove the desired amount of material. Silicon carbide sandpaper is available in both PSA and wet/dry versions.


How to avoid sanding mistakes

When sanding epoxy resin, it is important to avoid making common mistakes that can ruin the surface. Here are a few tips on how to avoid sanding mistakes:

1. Use the right sandpaper grit: When sanding epoxy resin, you should use a finer grit sandpaper than you would use on wood. A good rule of thumb is to start with a 60-grit sandpaper and work your way up to a 120-grit.

2. Don't sand too hard: It's tempting to sand epoxy resin aggressively in order to remove imperfections quickly. However, if you sand too hard, you risk creating new imperfections or making existing ones worse. Sand gently and evenly until all imperfections are removed.

3. Use a block sander: If you have one available, use a block sander instead of hand-sanding. This will help you keep an even pressure on the surface and avoid rounding over edges.

4. Be careful around corners: When hand-sanding, be extra careful around corners and edges. It's easy to accidentally round over these areas, so take your time and sand slowly and carefully.

5. Vacuum regularly: As you're sanding, make sure to vacuum the area frequently to remove any dust or debris that has accumulated. This will help you avoid making any further scratches or gouges in the surface.



Sanding epoxy resin is an important part of the finishing process. In order to achieve a smooth, professional finish, it’s essential to be aware of the different types and grit sizes of sandpaper available as well as correct safety practices when operating power tools. With patience and practice, you can easily master the art of sanding epoxy resin projects for a stunning end result.


By Primo Resin


Just added to your wishlist:
My Wishlist
You've just added this product to the cart:
Go to cart page