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Fusion 360 is a powerful and ergonomic CAD software developed by Autodesk. Designed for small and medium companies, the software is great for collaborating on projects. It includes parametric modeling, direct modeling, sketching, sculpting, CAM, rendering and simulations for designers and engineers. The software is designed around a cloud integration, allows easy collaboration and access to files from anywhere. It is also free for students and hobbyists.
If you want to learn how to prepare your 3D file with Fusion 360, you can check our tutorial on the software.
When the time comes to choose the right technology for a project, many elements are involved: application, material, production time and cost.
3D printing has a main advantage over traditional manufacturing techniques: the cost is not driven by the amount of unit you produce which means you can produce a single part or small to medium batches at a lower price than with the injection molding technique for example.
To discover how you can produce with 3D printing, please visit this page.
With laser cutting, production time is very short and price is low. The raw material is easy to access and available in many material types (metals, plastics, acrylics, cardboard). Moreover, you can add different types of engraving on your material.
Learn more about our laser cutting service on our website.
Normally when using a CAD modeling software, design is made from 2D sketches to 3D objects by extruding. In this tutorial, you will learn how we create 3D objects with laser cutting thanks to assembly.
To create our laser cutting files, we will use the sketches of our CAD file and a plugin in Fusion 360 to obtain DXF files of a box that you will be able to upload on Sculpteo’s platform.
To obtain the plugin, go in the Fusion360 Appstore and download DXF for Laser Cutting. Once you’ve installed it, you’ll find the plugin under the Sketch menu. It allows you to export your sketches into DXF and to take the kerf into account at the same time.
Let’s start by creating a sketch for the base of the box.
If you are going to design an object with multiple drawings, it is important to rename each sketch carefully.
Create a square shape of 100 mm of width and extrude it of the thickness of your material. Then, create one of the sides of the box by creating a sketch directly on the side of the base of the box. If you want to create joint features, use the line tool to sketch on your face. Then, use the intersect boolean operation to obtain the cut side of the box with your joints.
With the rectangular pattern, create the 3 other sides of the box and you’re done!
The main advantage of Fusion 360 is the ability to drive your design thanks to parameters. In our case, we use it to define the material thickness (MDF 6 mm) and the kerf (0,145) of our material. You can add as many parameters as you want (width, length, height, angle radius…).
When you add the kerf parameter, remember that you have to divide it in half. Indeed, as the laser hits the center of the cut line, the kerf is divided between each side of this line.
Now we can create our box thanks to our parameters as we did previously. The difference appears when you enter a value. For example, you have to enter the expression width + kerf to obtain the correct value.
As previously, use a rectangular pattern to create the other sides of the box.
The main interest of this method is the ability to modify in seconds the design of your box thanks to the parameters. To learn more about the parametrical design, read this article on our blog.
Once your design is done, click on the DXF4Laser plugin in the Sketch menu and follow the instructions to obtain proper DXF files for laser cutting. The plugin allows to nest each element in the workshop and to add the value of the kerf. Be careful, if you already included the kerf during the modeling process, you don’t need it at this step.
Then, your DXF files can be uploaded on Sculpteo and laser cut in your favorite material.
Recently, Autodesk released a plugin that turns 3D models from fusion 360 into 2D files. The process is, however quite different because it slices the models for assembly thanks to built-in patterns. You can download it on the Autodesk Appstore under the name Slicer.
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