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How To Create A 3d Print File

The technology behind 3D printing is complex and still relatively new. However, in just a short period since it was first introduced 3D printing has in many ways revolutionized the way we think about computer-aided manufacturing and rapid prototyping systems. If you’ve decided that you want to be a part of this amazing new technology, there are a few steps that you’ll need to follow before you can successfully produce your first 3D prints. The first step is of course creating an STL file.

The easiest way to create STL files for 3D printing is by using Computer Aided Design (CAD) software that allows you to create/copy the blueprint of the model you want 3D printed. Through design software, like SolidWorks, once your 3d object has been copied or created from scratch, you can then easily export your design as an STL file. Use a ‘slicer’ software, such as Cura, to then convert your STL file to a G-code file. You are now ready to 3D print!

Creating models as STL file format for 3D printing and learning how to make your own 3D model are valuable skill sets to learn. As 3D printing technology continues to evolve so do the possibilities in terms of what you can and cannot create. So, let’s dive right into it by learning more about what an STL file is, how to create one of your own, and everything else in between. 

5 Steps To Easily Create STL Files For 3D Printing

We start by taking a look at the step-by-step guidelines on how to create your very own STL file. This information has been gathered from several different 3D printing forums, and software websites all compiled into giving you an easy understanding of how it all works. So let’s jump right into it: 

Making an STL format file in five steps:

  1. Pick your favorite CAD program and open the software on your device.
  2. Make a plan and create the CAD models or 3D design utilizing the software tools.
  3. Save and export your CAD model file in STL (a common file format) the computer after you’re done with it.
  4. Pick a Slicer software like ‘Cura’ which is great for starters.
  5. Open the file and “slice” it using the software to create a Gcode file.

What Are STL Files In 3D Printing?

STL, short for Standard Tessellation Language or STereoLithography. This file type is local to the stereolithography CAD programming software utilized by 3D printers. A working and comprehensible STL file is necessary for your 3D printer to read and work accordingly. 

An STL file portrays an unstructured, standard triangle language of the object. What is triangulation? Triangulation is the division of an object into triangles. By introducing an item in this way, an STL file can be utilized by a 3D printer to deliver the object layer by layer. This is a secret little tip that works amazingly for complex items with odd or even adjusted shapes.

The Advantages And Disadvantages Of STL Files

Since 3D STL files just hold back mathematical data, they’re light, basic, and generally utilized in the added substance fabricating space. STL files are open source, so natural to observe programming or printers are viable with them. Given STL’s notoriety, the innovation fit for handling STL files is as of now very full-grown and will keep on progressing from now on. STL files are likewise safer than different organizations. While CAD files frequently contain delicate data, STL files just incorporate the outside surface and state of a computerized model.

Apart from these advantages, there are a couple of burdens that software teams ought to remember. For example, STL files are famously hard to alter. Despite the fact that this assists designers with holding ownership over their work, it makes changing STL files so badly arranged that it’s frequently simpler to begin once again as opposed to figuring out the decorated math into boundary representation (BREP) surfaces.

Additionally, STL files aren’t extremely exact. Since triangles are level, STL files can precisely address 3D models with level surfaces. Bended surfaces are approximated and might be coarse, even at the most elevated goal. Additionally, higher resolution files are bigger, which can cause slow slicing.

It’s additionally vital to recollect that STL files just store mathematical information. The article’s scale or units aren’t determined, and copyright, authorship, material, variety, or surface information is excluded from STL files. Assuming that you’re printing a straightforward model, this most likely won’t affect you.

Picking The Right Software To Create STL Files Easily:

First and foremost, there are a few distinct sorts of programming you can utilize. The following are two that we suggest:

Fusion 360

The Fusion 360 software is a cloud-based parametric design modeler. It offers various modes, each with its own purpose. These modes include; Model (Parametric Solid Modeling), Render (Real-time Ray Tracing), Patch (Surface Modeling), Simulation (Validate and Optimize Designs), Animation (Timeline and Animations), and CAM (Manufacturing).


The world’s most popular solid modeling software that works similarly to Fusion 360, but in more practical ways, furnishing you with the capacity to work from thought to finished model all in one program. Disappointingly though, SolidWorks isn’t cloud-based.

Similar to the Microsoft Office Suite and the Google G Suite, both software fundamentally offer very similar results. However, there are significant differences in terms of their user interface.

Distinction Between The Two:

The greatest contrasts between the two are the utilization of the cloud and their accessible OS. Combination 360 recoveries your work to a cloud, taking into account simple dividing among groups and work areas. It can likewise be utilized on any OS. However, you can do neither of these with SolidWorks.

Both Fusion 360 and SolidWorks are used widely in academic and business conditions. In the event that you need a more straightforward interface, try TinkerCad, which comes from Autodesk, the developers of Fusion 360. TinkerCad is free and easy to utilize. A quick browse through their display uncovers a wide range of designs. An extraordinary acquaintance for anybody who wants to figure out how to create a 3D plan, no matter how young or old they may be.


As far as UI or UX is concerned, Fusion 360 is more smooth, with a single command that can work for numerous functions relying upon the clients’ needs. Notwithstanding, Solidworks is more adaptable for individuals who like to utilize hotkeys to save time. The interface is by and large more adaptable and customizable, with trending themes like a dark mode or a light mode.

Fusion 360 feels simpler to use for some than SolidWorks. It appears to be intended for speedier work all over, with a press/pull type of function and the capacity to oblige planes to specific dimensions. Be that as it may, sketching those rough ideas one has is believed to be more straightforward in SolidWorks, and the two software are intensely sketch-based.

Key Considerations For 3D Printing With STL Files:

Assuming you discover that 3D printing with STL files is ideal for your venture, there are a few things you should be aware of.

Chord height or tolerance

Chord stature, or the greatest distance between the first plan’s surface and the STL network, can influence your print’s surface. Enormous harmony statues can result in a pixelated look, so set your harmony resilience between 0.01 mm and 0.0001 mm for a smooth print.

The vertex rule 

This standard requires each triangle to impart two vertices to adjoining triangles, so a triangle’s vertex can’t lie on an alternate triangle’s side.

The triangle sorting rule

Listing triangles in rising z-esteem requests will speed up the slicing system.

The positive octant rule 

Only including positive directions for triangle vertices saves space since it kills the need to incorporate positive or negative signs.

Angular tolerance

Decreasing precise resilience can further develop goals, yet the default of 15 degrees (or 0) is generally reasonable for most circumstances.

The orientation rule

This standard expects you to characterize a feature’s direction in two ways to assist with guaranteeing information is reliable and uncorrupted. Ensure the ordinary vector focuses outward and your vertices are filled in counter-clockwise requests while looking from an external perspective.

Encoding strategy

ASCII-encoded STL files can be useful while physically troubleshooting files yet become awkward with enormous, point-by-point models. All things considered, utilize the more minimized and simpler to-peruse paired encoding design.


Weigh your requirement for precision and subtleties against your requirement for speed. For most item groups, we suggest utilizing a paired STL design, a chordal resistance of 0.1 mm, a precise resilience of 1 degree, and a base triangle side length of 0.1 mm.

Most Used Softwares To Create STL Files:

TinkerCad – free CAD software

We can involve TinkerCad as an illustration since it’s not difficult to utilize. While planning shapes and squares, you can steadily make complex models that will intrigue you. It’s more straightforward to follow this worked-on instructional exercise here on the best way to involve TinkerCad for 3D models. TinkerCad Prints straightforward mathematical models, and it’s great for 3D printing.


The SketchUp software isn’t appropriate for model creation. Or at least, that isn’t one of its intrinsically constructed highlights. Consequently, you ought to check your Sketchup file for extra elements once you trade it from the Sketchup UI. Which wipes out surface blemishes present on your file.

SketchUp isn’t reasonable for 3D printing since it doesn’t send out accurately. Notwithstanding, rather than creating actual models utilizing this program, you can involve it in portraying early plans and testing.

MeshMixer – free software / free version

Meshmixer is another free altering instrument that you can straightforwardly download from Autodesk’s webpage. This product has a simple to-utilize UI, particularly while altering STL files, resizing 3D items, or changing a few perspectives.

The software engineers guaranteed it covers all issues you’ll probably experience with the file.

Best 6 Free 3D Modeling Softwares
3D Modeling SoftwareLicenseInitial Release3D Rendering SupportUser Level
Wings 3DBSD2018YesBeginner
Seamless 3DMIT2001NoBeginner
Dust 3DMIT2019YesGame Developers


Altering an STL file is done through two distinct kinds of displaying programming; CAD software and mesh editing tools. Computer Aided Design (CAD) software provides definite solid modeling with exact estimations. This makes them not so effective when it comes to altering STL files. If you are trying to edit an STL file avoid using TinkerCad, Blender, and FreeCAD. Instead, use mesh editing tools such as Meshlab and Meshmixer that are simply ideal for STL file editing.

Q2) How Do I Create an STL File in Blender?

The Blender software predominantly imports and exports STL files from and to your PC. While exporting, first save the current work, then, at that point, select export (File ‣ Export ‣ STL). While importing the just-exported STL, follow: (File ‣ Import ‣ STL).

Q3) Can You Convert an Image Into an STL?

Changing over an image into an STL file requires you to first change over the picture into grayscale. Softwares and tools like IMAGEtoSTL look at the little subtleties of your print or JPG file in light of the radiance of each pixel, upon which it turns it into a 3D pixel. Its radiance decides the pixel’s tallness. Only by using such a tool can you convert an image into an STL file.

Final Thoughts:

Creating your very own STL file is extremely important in the field of 3D printing. Although, you can get away with simply copying already created models to speed up the process. However, learning how to create your own models brings originality and character to your designs, making room for more creativity. Our recommendation? Choose the software you like and stick with it. The more you use it the more you will learn and the more amazing things you will be able to create!

Free 3D models can be found here: Thingiverse.com

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