How to Sand Resin 3D Prints: A Comprehensive Guide

Are you struggling with the finishing touches on your resin 3D prints? This comprehensive guide on how to sand resin 3D prints will walk you through each step, ensuring you achieve a flawless finish.

Jens Ohlig from Bonn, Germany, CC BY-SA 2.0, via Wikimedia Commons

Why Sand Resin 3D Prints?

When you complete a resin 3D print, the final product may have noticeable layer lines and surface imperfections. Sanding is a technique to smooth out these rough edges and create a polished end result.

How to Sand Resin 3D Prints: Tools You Will Need

Step 1: Safety Precautions

Before you start, make sure to put on a respirator mask to avoid inhaling resin particles. This step is crucial for your safety.

Step 2: Prepare the Work Area

Place your resin 3D print on a flat work surface. Make sure the area is well-lit and free of debris.

Step 3: Wet Sanding

Start with the 220-grit sandpaper and dip it in water. Gently sand the surface of the resin print in circular motions. Wet sanding reduces friction and prevents overheating.

Step 4: Move to Higher Grits

Once you’ve sanded the entire surface with 220-grit, move on to the 400-grit sandpaper. Repeat the same process, and finish with the 800-grit sandpaper for a polished look.

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For more articles on sanding, click here: Sanding: Your Full-Circle Guide to Smooth Mastery

Step 5: Clean the Print

After you’ve completed the sanding, clean your print with a soft cloth to remove any residual particles. Your resin 3D print should now have a smooth and polished surface.


Sanding your resin 3D prints might seem daunting, but with this step-by-step guide, the process is straightforward and manageable. Take your time and your prints will turn out looking professional.

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