What Sandpaper Grit Should I Use With Epoxy Resin?

This time, we’re going to talk about What Grit Sandpaper For Epoxy Resin. There is a lot of information about What Grit Sandpaper For Epoxy Tumblers on the internet, of course. Social media are getting better and better quickly, which makes it easier for us to learn new things.

What Polish Compound To Use For Epoxy Resin and How to Sand and Polish Epoxy to a Mirror Finish are also linked to information about Epoxy Table Sanding. As for other things that need to be looked up, they are about Here’s How To Sand Resin Like A Professional and have something to do with Can I Apply A Second Coat Of Epoxy Resin? Can I Apply Multiple Coats Of Epoxy Resin?.

100 Reference List: What Grit Sandpaper For Epoxy Resin | Dry Sanding Epoxy Resin

• The water that is on the surface when sanding catches and saturates the dust particles that would usually be free to float in the air. Epoxy can be a dangerous substance to the human body, particularly if ingested. Wet sanding greatly reduces the risk of epoxy particles being inhaled and ingested while sanding your project down. - Source: Internet
• Meguiar’s PlastX is one of the most common polishing compounds for epoxy resin. It is usually used on cars, which are sanded to similar grits. This allows the epoxy to become ultra-smooth and resistant to scratching, while really allowing any color to pop. - Source: Internet
• Regularly check the discs for clogging and remove and unclog the discs as needed. A sure tell tale that the disc is clogged is circular scratches forming on the resin which look like pigtails as the sander is moved. This is done by removing the disc and flexing it between fingers to remove the resin dust. Eventually the disc will need to be replaced as it becomes more difficult to unclog. - Source: Internet
• When wet sanding, waterproof sandpaper with a grit between 60 and 4000 is the best sandpaper for resin. Be careful of what level of grit you use because sandpaper with a low grit rating can leave marks on the current layer. Make sure you sand with a grit rating of 1000 or above if you are applying a new layer of epoxy resin. - Source: Internet
• There are 2 common methods that you can use to sand the surface of your epoxy resin pieces. They are; wet sanding and dry sanding. But, which is the best approach to use in your project? - Source: Internet
• modern random orbital sanders use a velcro pad to attach the sandpaper. this just requires you to purchase the correct size of paper with the velcro backing and press the paper onto the sander. Now you’re ready to sand your rough epoxy resin surfaces. - Source: Internet
• 💡TIP: ArtResin self-levels at about an 1/8" of an inch. You can pour a little deeper if you’re pouring into a vessel like a silicone mold, but you want to be careful not to pour deeper than 1/4" for a couple of reasons: first, it’s hard for bubbles to release at anything thicker than that and second, the resin can heat up in ways you don’t want if you pour too thick. Keep in mind that if you pour ArtResin deeper than 1/8", it will take longer to cure. - Source: Internet
• Wet sanding is usually the recommended option for sanding epoxy resin. The water used in wet sanding washes away the dust immediately. As a result, there is virtually no secondary surface scratching with wet sanding, and the sandpaper lasts longer due to less clogging of residue. - Source: Internet
• To get professional results, it’s always good to gather the necessary supplies before you do any task. The same case applies when you want to sand your resin crafts. But what are some of these tools? Here they are; - Source: Internet
• 4. Continue sanding with finer grits of paper until you are happy with the surface. Recoat with resin as necessary. - Source: Internet
• This set of sandpaper sheets has everything that you need for any kind of sanding project. The sandpaper is made of waterproof silicon carbide and the electrocoating ensures that the grit is homogeneously distributed. You can easily use this sandpaper for wet and dry sanding projects. - Source: Internet
• The other benefit of wet sanding is that it prevents the abrasive paper from getting clogged. On top of that, this approach produces less heat. These factors make the sandpaper last longer and protect the surface finish. - Source: Internet
• Epoxy resin is an adhesive typically used to bond wood together. It’s also commonly used as a protective coating on surfaces. What makes it so useful is that when applied, it almost instantly bonds to anything it comes in contact with. - Source: Internet
• Remember, you have an array of 400 to 1000-grit sandpaper. But which one do you use? Simple! Start with the 400-grit sandpaper and work your way up to the 1000-grit sandpaper. Make sure you cover the entire surface before you move to the next grit. Also, take note of the spot you’ve already sanded to avoid over-sanding. - Source: Internet
• Epoxy becomes very hard after curing, making it a little difficult to sand. Not to forget that it clogs sandpaper relatively quickly. This, however, doesn’t indicate that it cannot be sanded. There are 2 approaches you can use; dry sanding and wet sanding. - Source: Internet
• To deal with the excessive dust produced by this process, work in a well-ventilated room. If possible, take your resin surfaces outdoors and sand them there. But if that’s not possible, open the doors and windows. - Source: Internet
• Dry sanding tends to produce a lot of dust. This dust covers your pieces, making it difficult to determine your progress. Worst of all, dust from epoxy resin can have harmful effects on your health. So, always wear a breathing mask for safety purposes. - Source: Internet
• The technique is pretty much identical regardless of the grit used and should remain consistent throughout. The only real variable is the starting grit used which is determined by how rough the surface of the resin is. Rough surfaces or freshly machined surfaces will need to start very coarse at a 120 grit level to remove the machining marks, however minor scratches or surface defects will only need a starting grit of 800 grit. - Source: Internet
• Fortunately, polishing epoxy resin with a polishing compound is not overly complicated. Still, you will want to adhere to the directions below to achieve your desired result. Here are the steps to get your epoxy project finished and ready to show the world. - Source: Internet
• Up to 800 grit, use a marker pen between each pass to put some random marks on the resin. As the sanding progresses, the marks will sand off and show the pass is removing enough material. It helps ensure the sanding passes are consistent and methodical. - Source: Internet
• There’re some important aspects to consider and today, I’m about to reveal the tricks. Stick together, and this article will guide you through each step on how to sand epoxy resin like a pro. So, let’s get started! - Source: Internet
• After turning on the sand, place its bottom on the rough surface, then pull the trigger. You need to be very cautious though since sanders tend to vibrate a lot. For that reason, we suggest that you start pulling the trigger slowly. Also, avoid applying too much weight on your sander to avoid over-sanding the resin surface. - Source: Internet
• Do you have further questions about how to sand epoxy? We at Plastic Materials work with artists, small business people, and devout hobbyists every day to achieve their project goals. Contact us with your questions about sanding epoxy resin, or any other questions about working with epoxy. We can also assist you with any questions you may have about polyester resins, vacuum bagging, orbital sanders, and more. - Source: Internet
• Using a spray bottle, spray some water on your resin pieces. If the water is in a bucket, pour some water on the items with a bowl. Alternatively, you can soak the sandpaper in the water and use it to sand the items. - Source: Internet
• It’s not your fault. There’s so much information out there about creating with resin. How can you possibly learn it all? That’s why I wrote the book, Resin Fundamentals. It has the essential details beginners need to know to be successful with resin. Buy it now and get a download link in minutes. - Source: Internet
• Epoxy resin has two components; a hardener and liquid resin. When combined, the chemicals in the two components react, creating a very hard solid surface. The hardness of this resin surface can quickly dull and clog abrasive sandpaper. You will need to replace your sandpaper relatively frequently, in order to keep the sanding process effective. - Source: Internet
• 3M is quickly becoming, if not already, the top polishing compound for epoxy resin projects. It comes in 3 parts, and each one builds on the next to create the perfect look. It is commonly used on boats, cars, and resin. Personally, this is all I have been using over the last year and plan to continue to do so (though I will test out others as they are recommended to me). - Source: Internet
• When working your jewelry over the paper, remember to change direction. Go from north to south, east to west. Dip your piece in the water to remove dust and review the progress. As needed, move to finer grits of sandpaper until the desired surface smoothness is achieved. - Source: Internet
• yes, but only if you let the first layer completely cure. Epoxy is non-porous when it cures. Therefore, the second coat has nothing to adhere to. However, by sanding resin between coats, layers can bond well with the previous ones. So, yes it’s important to sand epoxy between layers! - Source: Internet
• To get the best result out of your epoxy resin material, sanding is necessary. To sand an epoxy resin workpiece, use an orbital sander with adequate dust extraction to smoothen the surface vertically and horizontally. Then use either of the following sandpaper grit sequences for the finish: 120 grit, 150 grit, 180 grit, 220 grit, 320 grit, 500 grit, 1000 grit, and 1500 grit. - Source: Internet
• You can use a resin fiber disc as well when sanding epoxy resin with an orbital sander over a large area where other types of sandpaper may wear out faster. Though this is not usually recommended because resin fiber discs are stiffer and can take off more material than you might want. If there are already deep scratches or you need to level out the surface, they can be used as a starting point before moving onto higher grit hook and loop discs. - Source: Internet
• Use a paper towel or a clean rag to clean the epoxy surface. Luckily, this step will be quite simple since you’re wet sanding. Once you’ve achieved the desired smoothness level, the process is complete. However, if the surface doesn’t have the perfect smoothness, continue the process. Afterward, clean the items again and leave them to dry immediately. - Source: Internet
• Orbital sanders are very aggressive in their mode and should be used carefully with attention to the type of disc, pressure, and even movements. Dry sanding epoxy resin with an orbital sander risks dissolving the material and should be carefully performed. Wet sanding is not common with an orbital sander but can be accomplished. - Source: Internet
• Considering its versatility, epoxy resin can adhere to most surfaces out there. Although this is a great thing, some of these materials are susceptible to water damage. A good example of a moisture-susceptible material is wood. - Source: Internet
• Before working with epoxy resin, warm the resin and hardener at room temperature. Always mix resin mixture thoroughly for at least 5-7 minutes slowly, making sure to scrape the sides and bottoms of the mixing cup or bucket. If you pour epoxy into a mold to fast more small bubbles will arise, always pour very slowly. - Source: Internet
• Sanding epoxy resin surface is preparing the resin for the next step – polishing. Sanding process also reduces dust formation. Let’s see what we need and how to do it properly. - Source: Internet
• Before you start the process, apply water to your resin objects. To do this, put cold water in a spray bottle. Alternatively, you can get a bucket or bowl of water readily available. - Source: Internet
• 💡 Pro tip: Resin for art self-levels to a depth of 1/8 inch. That means you need to pay attention to the depth you’re sanding. You may not need to take much off. But, at least enough that a new layer of resin will completely cover the area and does not have to fill in more than 1/8 inch. - Source: Internet
• When it comes to wetting your resin for sanding, you have a couple of different options. You can use whichever method works best for you. One of the most popular methods simply involves dipping your sandpaper block into a bucket of water every now and then to keep it wet. - Source: Internet
• A supply of various sanding papers, from 400 to 1000 grit. If you are wet sanding, you’ll need waterproof sandpaper of the right grit ranges. Generously stock sandpaper for your needs. - Source: Internet
• The materials are the same - sandpaper with grit ranging from 400-1000 grit, a protective mask, and water. However, a small wooden block is also very useful. You can cut down larger sandpaper sheets for easier handling. - Source: Internet
• To wet sand your epoxy resin, you need waterproof sandpaper. This method is great for sanding epoxy as it doesn’t clog the sandpaper as much as it normally would. The dust is reduced as a result, which makes working much easier. To wet sand your resin, follow these steps: - Source: Internet
• Now, you might be wondering how to polish epoxy resin and get that beautiful polished finish we mentioned before. If you don’t want to have a matte finish, polish your epoxy by following the steps below. Remember, there are several types of polishes out there, so it will depend on which one works best for you. - Source: Internet
• Sometimes when you’re creating resin jewelry or epoxy art, you may find you have an uneven surface. This can be a resin edge, unevenness, or gaps in your resin surface (also known as ‘fish eyes’). The good news is that you can sand resin once it’s fully cured to get an even surface. - Source: Internet
• 2. Rub in the polishing compound onto the resin. You can use a microfiber cloth to do this. It is best to use a cloth on any small areas of the resin where a buffing wheel will not fit - Source: Internet
• Most professionals recommend wet sanding of epoxy resin by hand. However, cured epoxy becomes hard, making the process difficult for most people. For this reason, you need to find an appropriate size and shaped sanding block. If your pieces have many curves, a sponge pad will work better. However, if your piece requires a dead flat surface you will need a hard sanding block. - Source: Internet
• The dust produced when sanding resin can cause serious health problems if inhaled. The small resin particles are carcinogenic and can damage your lungs, so it is always recommended that you wear some sort of mask when you sand epoxy. Wet sanding can also help reduce the amount of dust that is produced and set airborne as you sand epoxy resin. - Source: Internet
• The first step to polishing an epoxy resin project is to sand it down. This could be done in a variety of ways depending on what the project is. Of course, sanding down a large epoxy resin table is going to look different than how you would sand a smaller piece like a craftsman pen that has been designed with an epoxy resin handle. - Source: Internet
• To prepare the surface for a subsequent epoxy coating or painting work, wipe the dry surface with a paper towel to remove any remaining deposits, then gently sweep the surface with a broom. Do not use rags – they could contaminate the surface. If you want to paint the surface immediately after sanding, use an electrostatic dust cloth afterward. This will remove any dust particles that may still be present, which would worsen the result when painting. - Source: Internet
• Again, dry sanding epoxy produces a lot of dust. This increases your chances of inhaling toxic dust, which is not good for your health. So, before you get into the actual process, put on the necessary personal protective equipment (PPE). This includes things like gloves, respiratory masks as well as safety goggles. - Source: Internet
• 3. As you proceed to sand, frequently remove debris, and check the surface, removing sandy residue with a cloth or paper towel. Be careful, as you switch to finer grades of sandpaper grains from coarse paper, debris may remain and become trapped when you apply your next coat of epoxy. Take care when you are sanding epoxy resin between coats. - Source: Internet
• Polishing resin with a polishing compound is the most common method for most applications. This is likely used on jewelry, games, cutting/serving/charcuterie boards, butcher blocks, furniture, dining room tables, river tables, and desks. This method is great because it can leave the wood looking and feeling like wood while making epoxy shine like glass. - Source: Internet
• Second, to save you some time, you can wait 3-5 hrs after your first pour, to where the resin has reached a jelly like state. Instead of sanding, you’ll pour the second coat on at that time: the stickiness of the resin will provide the tooth and the curing will happen simultaneously between the two layers, bonding them together very nicely. Repeat these steps until you reach the thickness you desire. - Source: Internet
• Finally, now that you have gathered your materials and are ready to begin polishing your epoxy resin project, it is time to choose a polishing method. When polishing, you can do so by hand or with a buffing machine of some sort. Still, you want to make sure that you are using a polishing method that is most appropriate for your level of comfort as well as the unique dimensions of the project that you are planning to work with. - Source: Internet
• Yes! Wait for the epoxy resin to dry. Then sand down the surface concentrating on spots with air bubbles. Afterward, wipe away the accumulated residues and dust with a damp towel. - Source: Internet
• Two methods for resin sanding are hand sanding or the use of an orbital sander. The steps are the same whether you use an orbital sander or hand-sanding with abrasive sheets. Most importantly, you’ll want to keep the sandpaper clean to prevent swirls, pigtails, or other problems such as scratching or other surface damage. - Source: Internet
• When it comes to sanding epoxy resin, there are a few things that you should be aware of. Epoxy resin can be tricky and a little risky to sand, but with the right tips and tricks, you will be able to sand epoxy safely. The main difficulty when sanding resin lies in the hardness of the surface. The main safety concern when sanding epoxy lies in the toxicity of the particles. - Source: Internet
• As the resin smooths, move up in grit. A 220 grit will offer a flat finish. A 400-600 grit yields a satin finish, 800-100 is a semi-gloss, and a 1200 grit or higher is for a high gloss sanding finish. - Source: Internet
• Wet the paper and sand in circular motions, moving back and forth. You should take special care when resin sanding wall art. The resin layer is thinner and aggressive motions or extreme pressure can damage the surface and the materials underneath. Consistent, smooth circles are key. - Source: Internet
• This post may contain affiliate links. We may earn a small commission from purchases made through them, at no additional cost to you. You help to support resin-expert.com - Source: Internet
• You can use an orbital sander successfully for tables and other large objects for resin sanding. An orbital sander allows you to sand a large surface quickly. Sanding epoxy resin with an orbital sander works well for dry sanding for large surfaces. - Source: Internet
• Don’t forget to wear your mask so that you don’t inhale any dust. Place the sandpaper on your working surface and dip your piece of jewelry in water. Move the item back and forth over the sandpaper, using caution to avoid over-sanding and removing too much of the epoxy resin. - Source: Internet
• 3. Then, use the same techniques for sanding resin jewelry when sanding your resin art. Go back and forth and in circles to make sure you sand evenly. - Source: Internet
• Any synthetic resin surface, once hardened, can be polished. Wooden boards, artistic creations, floors, repaired objects, or furniture refurbished with epoxy resin are suitable for this process as long as it is done with care and precision. In general, polishing requires three phases; flattening, progressive honing, and buffing/polishing. - Source: Internet
• We always suggest wet sanding resin for which you will need waterproof sandpaper. Waterproof sandpaper is made from silicon carbide and it is available in all the necessary grit sizes. The smallest grains can cause deep grooves in your epoxy, so we suggest starting with at least 120 grit. - Source: Internet
• The end results of working with epoxy is usually a matte finish. Although this is beautiful, it often isn’t the finish that you are expecting or looking for. If you have any experience in working with epoxy resin before, chances are you know exactly what you can do to give your work a stunning shine. - Source: Internet
• Epoxy resin is notoriously known for its ability to clog up sandpaper. Wet sanding helps you use your sandpaper as long as possible. This means that not only will the cleanup process be much more efficient, but you can save money and resources by prolonging the life of your tools. - Source: Internet
• You can purchase waterproof sandpaper for sanding resin in grit sizes that range from 60 to 1000. When it comes to sanding epoxy, we suggest using a grit size of 120, as this will prevent the formation of deep scratches on your resin surface. For polishing purposes, we recommend using a grit size of 1000 to create a beautifully smooth and shining surface. Here are a couple of our top suggestions for waterproof sandpaper. - Source: Internet
• There are two essential things to note when dry sanding. First, dry sanding epoxy resin produces more dust, so a face mask is required to prevent inhalation. A mask should always be worn when sanding resin since the particles can be toxic and carcinogenic if inhaled. The second consideration is the heat buildup from dry sanding. This heat can actually dissolve the resin, causing a cloudy finish that is difficult to fix. - Source: Internet
• If the epoxy resin surface has little or no imperfections, you can use a soft sanding pad or sheet over the surface as the starting point. Otherwise, start with a lower grit to remove edges and other imperfections. Sand across and then parallel with each grit, moving continuously with even pressure. - Source: Internet
• To polish your epoxy resin using a dremel, you will need to use a rotary attachment. A dremel allows you to easily remove fine detail from your resin. Instead of having to go over every single spot again, you can just rotate the dremel around the resin. This way, you’ll only need to re-apply polish once. - Source: Internet
• Correction–I HATE sanding resin. Yes, I know HATE is a strong word. and I’m still using it. - Source: Internet
• The other problem is that a Dremel tool takes off resin quickly. If you aren’t careful, you’ll have divots in your resin that you’ll have to repair. Or fill in with more resin. - Source: Internet
• Dry sanding works similarly to wet sanding, except there is no water involved. To dry sand your epoxy resin you need to simply brush the area where you’d like to sand it. Keep repeating as needed until your surface is smooth. - Source: Internet
• Still, the most common way to sand epoxy resin is to use waterproof sandpaper. Wet sanding has a lot of advantages when working with epoxy resin that dry sandpaper does not. The primary advantages include the following. - Source: Internet
• Epoxy ripples can form when the epoxy resin hardens unevenly. Luckily, sanding will enable you to fix this problem. But first, let the epoxy fully cure. Once that happens, lightly sand the surfaces with fine-grit wet sandpaper. Lastly, wipe down the items to remove any dust and debris. - Source: Internet
• Wet sanding is usually done by hand. Do not use an electrically operated grinding machine if you are sanding wet, as you could otherwise suffer an electric shock. As an alternative, you can use an air-powered sander for large surfaces. Here is a brief video tutorial for wet sanding a resin coaster. - Source: Internet
• Some people call it “crazy glue” because it’s so versatile. While it certainly has its disadvantages, these disadvantages pale in comparison to the benefits. If you don’t already own an epoxy kit, I highly recommend getting one. It will save you time, money and effort later on if you ever need it. - Source: Internet
• 💡 Pro tip: Here’s how I use a rotary or Dremel tool for sanding resin. I take off large amounts of overspill and get it close to where I want the finished edge. Then, I use hand-sanding methods to get it smooth and even. - Source: Internet
• For small to medium-sized projects, I suggest sanding by hand. For medium projects, you can use wet sandpaper that comes with a sanding block. For small projects, like jewelry, you can lay the sandpaper out and rub the object lightly against it. You want to make sure to go from about 120 grit (anything lower will leave noticeable scratches) up to at least 800 grit, but many people choose to go all the way up to 3000 grit which is extremely coarse. - Source: Internet
• During curing, especially at fluctuating temperatures, a slightly sticky, waxy layer may form on the surface. Its appearance changes depending on the moisture content of the air, but it is usually more noticeable in cool, humid conditions. It may be difficult to see at all, or it may appear as a thin, greasy, or dull layer. However, this so-called amine redness can be removed and underneath it, the epoxy resin should be intact. - Source: Internet
• Resin polishing is a must for obtaining a shiny and glossy surface of your artwork made of epoxy resin. Make sure that your workpiece has been prepared for polishing. If you don’t do it carefully, the surface will show scratches which cannot be removed. - Source: Internet
• Whether you are making an epoxy and wood table or creating beautifully hand-crafted resin goods, sanding is an essential part of the process. By sanding your epoxy, you will create a smooth and polished surface that finishes your piece off perfectly. Sanding resin can be a tricky process, especially if you are attempting to sand epoxy for the first time. In this guided article, we discuss the best methods for sanding resin and show you exactly how to sand epoxy resin to produce the best results. - Source: Internet
• Most of the woodworkers and artists have worked with epoxy resin before. You’ve probably seen that after curing, release from a mold or noticed that the result is not as planned, it does not have a crystal-clear surface, but a matte and dull or contain haze finish. Thankfully, there is a simple method to make your resin piece surface shine and give a high gloss finish. It’s a very simple technique that ensures a perfect project result. - Source: Internet
• We always recommend that you sand epoxy resin wet with waterproof sandpaper. Wet sanding is by far the best way to remove any uneven areas and it reduces the clogging of your sandpaper by the resin dust particles. As we have said already, wet sanding can also be the safer option, as the water prevents too many of the epoxy dust particles from becoming airborne. As the water gathers the dust particles, you are able to see the effects of your sanding more clearly. - Source: Internet
• One of the most important parts of polishing your resin project is going to be the compound you choose to go with. A lot of table and charcuterie makers will opt for oils like Walrus Oil or Odie’s Oil. These are great when working with a project that is primarily wood, or will have a lot of potential contact with food as these are natural and non-toxic in any way. When working with something that is mostly epoxy, and needs that glasslike finish, you will want to use a specialized polishing compound- usually used on cars, but in this case, made safe to use on your epoxy resin projects. - Source: Internet
• So you want to learn to polish epoxy resin? It can be a long and arduous process but it’s definitely worth it in the end to see the project you’ve spent so much time on, shining to perfection. All that sweat and hard work will finally be visible and you’ll be able to sit back and enjoy its beauty. Let’s get into it! - Source: Internet
• A hard-surfaced area you can work in that will allow you to use water and can be easily cleaned. Even wet-sanding results in sand, resin particulates, and other debris. Make sure the area is also closed off to pets and kids. - Source: Internet
• Typically, wet sanding should always be done by hand. The combination of water and an electrical sander is a recipe for a horrible shock. There are a few different methods that you can use to wet your resin while sanding, and we will cover all of these in a little more detail. - Source: Internet
• Whether you are going to do this by hand or with machines, the process largely varies by preference and project. To make it simpler, I have listed out the general flow of polishing epoxy resin in order to achieve a glasslike finish for your project. Using this information, you can jump into polishing your epoxy resin and getting that “pop” you were going for. Let’s take a closer look. - Source: Internet
• Inhalation concerns are also drastically reduced with wet sanding. The downside of wet resin sanding is the water itself. It can make a bit of a mess, and also damage any wood connected to the resin if you use too much or let it sit for too long. - Source: Internet
• 4. Once everything is smooth and even, pick the next finer grit of sandpaper. Continue sanding as you did in the previous step. Gradually use finer grits of sanding papers. Otherwise, you won’t get all the scratches out from the previous paper. - Source: Internet
• While we typically do not recommend it, you absolutely can dry sand resin, and there are a few instances where it is your best option. When you are working with a combination of epoxy and wood, wet sanding can cause the wood to swell which is not ideal. On the whole, it is not recommended to dry sand. The heat caused by dry sanding with an orbital sander can actually dissolve the epoxy resin. The dissolved resin will become matt, and it will take a great deal of effort to restore the luster. - Source: Internet
• Wet sanding is recommended when sanding epoxy resin because it requires waterproof sandpaper. Waterproof sandpaper is manufactured from silicon carbide and comes in a variety of grit sizes. It’s recommended to start with at least 120 grit because even the tiniest grains can produce holes in the epoxy. - Source: Internet
• The reason for this is epoxy is not porous, and sanding up to 1200-3000 grit causes oils and waxes to have a hard time penetrating the sanded area. You will need something that is able to penetrate a high-grit sanded epoxy. Here are a couple of great options, although there are many more if you explore. - Source: Internet
• Check the progress of the sanding process again and again by removing the sanding residues with a cloth. The epoxy resin surface should always be cleaned, especially when changing to finer grain size. Otherwise, there is a risk that the coarser, detached grains of sand will leave grinding marks again. - Source: Internet
• Due to the waxy surface, sanding with normal sandpaper does not work, as it will clog up immediately. Amine redness is not a problem in itself: it is the effect of it that is the problem. If you continue to work without removing this layer, it will prevent lacquers, other epoxy coatings, and other substances from bonding effectively and ensuring adhesion. The surface should therefore definitely be cleaned. Here is a great method for removing amine blush from your resin projects: - Source: Internet
• A great tool to use is a heat gun or torch. It’s an easy technique that works very well! If you notice bubbles on already cured artwork, use a razor blade to pop the bubbles and mix these holes with an extra pour, wait for minimum 4-6 hours and reflood the surface. Check out our informative article on how to remove air bubbles from resin – How Do I Get Bubbles Out Of Epoxy Resin? - Source: Internet
• Wet sanding resin would be significantly more difficult if you were to use traditional sandpaper. Normal sandpaper would become soggy and fall apart with extended exposure to water. As such, if you are going to wet sand epoxy, we suggest using waterproof sandpaper. Waterproof sandpaper is made from a closed layer of silicon carbide that resists the effects of water. - Source: Internet
• Using a dry sheet of sandpaper is better if you are new to epoxy sanding, but not advisable. It’s better for you to wet-sand epoxy rather than dry-sand it. Wet sanding is the most suitable way for scrubbing epoxy resin in most situations because dry sanding your resin item with a random orbital sander, or just by hand, produces a lot of heat owing to pressure between the different surfaces. - Source: Internet

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