How To Smooth Out 3D Prints?

The final result of 3D printing can offer creativity on any customer’s demand. It has endless possibilities, but obtaining a smooth surface can be challenging. Layer lines and irregular surface structures are the most noticeable defects. If adequately joined, the whole object’s appearance will be preserved to a great extent. Fortunately, several methods are designed to eliminate irregular patterns and surface roughness. It is essential to reach professional-looking outcomes. In this article, we will be covering several ways to finish 3D prints. And transform rough surfaces into a smooth finish.

Methods And Steps To Obtain A Smooth 3D Print


Sanding is to smooth a rough surface with water paper. When sanding a 3D print, apply a little sandpaper over the surface to make it smoother. Initially, we will use the sandpaper to remove large bumps and lines. Gently sand the surface in circular motions. Sanding makes your 3D print good by getting rid of lines and imperfections. These can make your appearance pleasing. Remember not to sand the print too hard, or it will get ruined. Sanding can help make your 3D prints more polished.

Filling And Priming

Filling and priming will help produce a smoother surface for larger prints with imperfections or gaps. Apply a filler material. It can be epoxy putty or filler primer, and use it to fill in any gaps or areas that are not flat. After the filler is dry, sand the surface using the exact steps you did in sanding. Following sanding, cover the print with a coat of primer to obtain a perfectly even and level finish. The primer removes all the remaining imperfections. It provides a uniform layer to paint or even further finish.

Chemical Smoothing

Chemical smoothing is a technique where the solvents are used to melt down the outer imperfections. These are frequently utilized solvents for chemical smoothing, such as acetone, isopropyl alcohol, and tetrahydrofuran (THF). Carry out chemical smoothing of the sample by dipping it in the solvent, spreading it with a brush, or sponging it. Use the solvent as it works, and then conclude the print, letting it dry completely. Beware of Chemical Smoothing because some solvents might be toxic to your health. It should be done in a well-ventilated space if used in an enclosed area.

Heat Treatment

Heat treating is a method of employing heat to make something more perfect. If we talk about 3D-printed objects, it’s like using a warm blanket to flatten the prints. Attaining a better flow of the plastic by heating its surface. Such as with a heat gun or a hair dryer is possible because the plastic softens when gently heated. This also provides:

  • Faster print velocity.
  • Allowing for the removal of lines and bumps.
  • Giving the print a smooth look.

However, it would help if you controlled its temperature. Otherwise, it may be damaged. The aesthetic of 3D prints can be adjusted by heat treatment. It gives them a more polished and professional look.

3d Printer Enclosure

A 3D printer enclosure with acrylic panels is like a room with walls that will protect your 3D printer. It’s a particular shelter or housing that protects the printer while printing. The enclosure helps maintain the temperature and humidity levels. This is another factor that determines whether the printing will be successful. It helps prevent the cold air and any other air current from being blown onto the print area. The 3D printer enclosure helps print 3D better and makes them more smooth and consistent. It is like the printer’s home but comfier and controlled. And a very effective oneā€“the ideal environment for printing!


Finally, after its mortality, the organization continues functioning and dies. It does not matter which method you use (sanding, filling and priming, chemical smoothing, or heat treatment). Each method has its advantages and disadvantages. Try to find which methods work best for your prints, and seeing the results will be satisfying. A smooth print is crucial for the work quality.

Furthermore, a 3D printer enclosure can regulate the printing environment, which helps obtain high-quality printing. Implementing these strategies and methods in 3D printing can guarantee results. That will demonstrate the actual characteristics of the additive manufacturing process. Hence, do not delay to develop and improve your abilities. Most importantly, have fun while producing fully completed, smooth 3D designs.