Technology

STL – the most popular format for 3D printing

Today, the STL format (modeling file for stereolithography) is gaining in popularityIts development was carried out according to the needs of stereolithography (volume lithography), and was intended for rapid prototyping and visualization of three-dimensional modelsThe format describes the triangles that make up the contours of any objectIts main difference from other formats is ease of useTo represent the shape of an STL digital 3D model, a sequence of triangles is used.

There are two structures of STL formats: text and binaryThe binary structure of the STL file model is more compact, requires less space and has greater accuracyBut the use of the text structure allows the transfer of files to a computer with a different representation of numbers, and the number of characters of each number can be arbitraryAt the beginning of the text file of the STL program, the presence of the key phrase “solid” is requiredThe following is a brief explanation of the facility and its manufacturerThen the triangles themselves are described, for which unit normal vectors and a Cartesian three-dimensional coordinate system are usedThe end of the file is indicated by “endsolid”.

Convert to STL format

Many people wonder when meeting with STL how to open this formatIt is best to use Microsoft Internet Information Services (IIS)There are several more programs: MeshLab, Geomagic Explorer, Dassault Systemes CATIA and othersTo edit the STL models format, any 3D editors and CAD programs are used3D printing leads us to a new reality, but in order to print anything, any 3D printer needs instructionsThere are STL files for this.

All STL models for the printer include hundreds, or even thousands of horizontal layers that will overlap each other until the 3D object is printedTypically, such files are either written “from scratch” on their own, or ready-made files created using various 3D modeling programs are usedIf you have not yet mastered the construction of three-dimensional objects with the nuances of conversion, it is easier to turn to ready-made 3D models.

Errors in STL file

Your 3D printer will print the proposed material without any problems, only to get a high-quality result, you need to take into account one more small feature of the technologyWhen you export selected or created models in STL format for printing, holes often appear on them that prevent the models from becoming wholeUse the NetFabb cloud server to avoid these problemsSend the file to it, and when it fixes, check the STLView viewer, and only after that resort to printingWe wish you success!

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