This great image from Wikipedia breaks down how a mesh is built. A mesh file is a collection of vertices, edges, and faces that define a 3D dimensional shape. OBJ files then you work with mesh files all the time. If you’re familiar with 3D printing and you use. (Click here if you prefer to learn by video) The Mesh (STL) File If you’re wondering how to turn an STL file into a solid body, then you’re in the right place.īefore we get started with actually converting the mesh model I want to cover some of the terminologies to ensure we’re on the same page, and so you actually understand why we’re converting the model. The purpose of CAD is accuracy and you cannot get that from a triangulated mesh.How to convert an STL mesh to a Solid in Fusion 360įusion 360 is very popular among hobbyist and students who enjoy 3D printing. But even for the Fusion 360 is not a good application that can do this efficiently and precisely. stl as a final end result but using that triangulated mesh stuff in a CAD application is really not a good idea, unless the purpose is to reverse engineer geometry based on such a mesh. Meshmixer is simply a much better application if you want to work with triangulated meshes and most of the tools in Fusion 360's mesh workspace have better equivalents in Meshmixer.įusion 360's nature is to be a CAD application and the desired end result is a Solid Body / BRep. one reason to use another software is of course to educate yourself Knowing now how to do that in Fusion 360 in this particular case, gets you an end result but it does not do anything to further your knowledge what the difference between a solid and a mesh is.Īnother reason is of course to use a better tool for a given task. Let me know if you need any help with that workflow! Once they're combined, you can save that new body as an STL. Use the Modify > Merge Bodies tool to combine the two mesh bodies.Once in the Mesh workspace, use the Create > BRep to Mesh tool to convert the Fusion body to a mesh body.Go into the Mesh workspace by clicking on "Model" in the upper left corner and selecting "Mesh" from the dropdown.Click on the gear in the lower right corner of Fusion 360 and select "Do not capture design history," then click "Continue" on the window that comes up.What will be easier for your use case is to convert the Fusion body to a mesh, then combine the mesh bodies: If your STL has too many triangles, you would need to use ReMake or another program that supports quad meshes to convert the mesh to an OBJ quad file type. Hi requires both bodies to be the same type in order to combine them, so you can either convert the STL to a BRep (solid) body or convert the body you made in Fusion to a mesh. The triangles didn't hinder it to be scaled, output, printed, so what am I getting wrong? This gives you a dialog box 'Quad mesh to T-Splines' > OKīUT, the functions aborts because "this body contains a high percentages of triangles" (actually 100 percent) Next try, let's use the mesh to form a fusion-supported object, after several trials (and deprecated hints in the docs) I finnaly found: But not for the 3D-print function > same failure as above. This has some effect on the screen, it now looks a bit more like one object, so to speak. Ok, so the internal representation may be different and the mesh wants to be converted to some 'real' fusion object.įirst I tried Mesh>right-click>Edit and then 'Make closed Mesh'. In the browser both parts are listed unter 'bodies' and can be selected there.īut then the '3D print' functions only allows to select one at a time. So I move, rotated and scaled them so they fit nicely to the mesh objected that I imported.īut exporting them together as STL (File > 3D print) just does not work. The objects that I constructed in fusion can also be exported to STL and print fine. The import of the STL mesh works fine, and if I turn, scale and output to STL again, fine too (and print nicely after preparing them with Cura). Now I stepped into the field again for 3D printing, and after evaluating several options, I found fusion-360 to be the most intuitive and thought-through one.īut the current problem really makes me loose my faith.Īll that needs to be done is combine an object in STL format (from thingiverse) with parts constructed in fusion. I had some experience with 3D construction for visualization purposes, couple of years ago. After 3 hours of working with Fusion (and the online docs) and failing to find a solution, maybe someone can give a hint here.
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