The question: “How to repair an STL?” is constantly asked in the forums and Facebook groups, and the answer is NO, if you Repair STL with Meshmixer. Why? Quite simply because when you go to edit a *.stl or *.obj file, as well as when you draw in any of the 3D formats and you turn the work into a stl file the error is around the corner. The stl format is made up of meshes and it is not easy to work with them.
Repair STL with Meshmixer: What is a mesh?
The mesh is a subdivision of any solid into smaller solids of trinagular shape, represented only by vertices, edges and faces. It is necessary because it is a mathematical and analytical representation rather than purely illustrative and this gives it 2 properties. It makes it very light with the same definition, therefore workable, exchangeable and portable with ease. But at the same time it makes it difficult to modify. Without reworking it in a classic 3D model. The mesh has a “definition” that is the greater the more, and the smaller, the faces that make up the model. In the photo you can see perfectly what you mean. Very small planar faces, if in sufficient number, can give us the impression of forming a curved surface.
Note: In 3D printing, the definition was also used in reverse order. For a long time there was the fashion of LowPoly. This technique consists in removing as many faces as possible that leave the model recognizable. This technique has made some designers famous. In 3D printing, if you think of Low Poly, you think of Flowalistik and its Pokemon Low Poly.
Repair STL with Meshmixer: Why is it important to correct the slightest error when it comes to repairing a stl?
In 3D printing, it is very important to correct any errors in the grid of the meshes that make up a model. This is because when we feed our slicer the stl file is not able to detect errors and takes for good everything that is passed to it. The slicer does not notice that a point or a face is missing and simply interprets it as an empty space. When you go to edit a stl, as well as when we turn a very complex drawing of ours in stl just a trifle and the software makes mistakes. It is enough that the software “forgets” some points, that the model is not “mainfold” (closed). This is the most common error we can come across.
When you turn a model into a real object, the printer cannot create what doesn’t exist. When our printer makes a mistake in an object, if it has never done so before, we analyze the project well. That’s why I recommend, before launching the slice, to check well the model in all its parts to see any errors. All slicers give us the possibility to analyze the model layer by layer. With the last Cure we can also see all the movements of the nozzle!
Repair STL with Meshmixer: what do I do?
After this not even too short introductory hat we move on to action. The model has errors and is not mainfold? no problem! you can repair a stl in less than a minute! Here is the step-by-step guide.
Repair STL with Meshmixer: Let’s start
Let’s start with downloading this software. Autodesk Meshmixer is totally free, you can see our very short review in this article.
We have catalogued it as a Slicer even if it is not really a slicer, even if it has the possibility.
You can find the link for the free download at this address. The program weighs a hundred megas. After installing the program we can start it.
Repair STL with Meshmixer: will take less then a minute!
– With the + key we import the damaged stl, which we believe to be the damaged stl or in any case that we want to check.
– We move to Analysis, then we press inspector.
– Now a “repair all” will do all the work
– Now you can close the program and you will be asked to save. A Save and Voila! Your mesh is repaired.
Something about Meshmixer
As soon as you’ve installed this software, you might as well take a look at it. Like all work, Autodesk will leave you amazed at what it can do.
At first glance you can already see that it is able to sculpt the model, edit the meshes and analyze them.
The analysis department can also analyze the weak points, those too thin, but also the center of gravity of the model.
As already mentioned, it can also be used as a slicer and in this case it excels in forming tree supports, which fork from a point. Very characteristic supports that are worth using very often!