Para poder imprimir un modelo en una impresora 3D es necesario generar antes el archivo STL correspondiente. STL (de estereolitografía) es un formato de archivo que prácticamente todos los programas de control de impresoras 3D aceptan.
Muchos, sin embargo, hemos tenido problemas a la hora de generar estos archivos partiendo de nuestro diseño y luego, al imprimirlos en 3D, el resultado no ha sido el deseado.
La siguiente guía debería ayudaros a resolver estos problemas y obtener ficheros STL perfectos, listos para enviar a vuestra impresora 3D.
A continuación, los pasos necesarios para exportar un .STL:
SolidWorks
File > Save As
Set Save As Type to STL
Options > Fine > OK
Save
STL settings: How to change STL settings
File > Save As
STL > Options
For a smoother STL file, change the Resolution to Custom
Change the deviation to 0.0005in (0.004 mm)
Change the angle to 5 (Smaller deviations and angles will produce a smoother file, but the file size will get larger)
Pro/ENGINEER
File > Export > Model
STL
Set chord height to 0. The field will be replaced by minimum acceptable value.
Set Angle Control to 1
OK
IronCAD
Richt Click on the part
Part properties > Rendering
Set Facet Surface smoothing to 150
File > Export
Choose .STL
Solid Edge
Open Model & select File > Save As
Select File type as STL
Options > conversion tolerance to 0.015 mm
Surface Plane Angle > 45°
Select Binary type and OK
Name & Save STL file
AutoDesk Inventor
Go to the File menu, then select the ‘Save Copy As’ option
Select STL from the Types drop-down
Click the Options button, and choose the High detail level
Click the Save Button
3D Studio MAX 3D
File > Export>
Select "StereoLitho [*.STL]" in
Select location
Enter a name
Save
OK
Export To STL dialog
Object Name: Enter a name for the object you want to save in STL format.
Binary/ASCII: Choose whether the STL output file will be binary or ASCII (character) data. ASCII STL files are much larger than binary STL files.
Selected Only: Exports only objects that you selected in the 3D Studio scene.
Rhinoceros 5.0
File > Export Selected>
Select [*.STL]" in
Tolerancia: 0,01 mm
Ok
Autodesk Fusion 360
Seleccionar componente o modelo
"MAKE" o Save as STL
Guardar como STL
AutoCAD
Set DISPSILH to 1
Set ISOLINES to 0
Set FACETRES to 10
Relocate the object to the positive X-Y-Z octant
Use the STLOUT command to export a .stl file. (AMSTLOUT for AutoCAD Desktop files)
Blender
File> Export > STL
Enter Filename
Select Location
Click button Export STL
CAD Key
File > Export > STL
Type in a filename and select OK
Change Format to Binary
Use default Facet Tolerance
Additional export tolerance options are in the Solids99 Configuration window accessed from the Tolerance section of Configuration.
Catia
Select the entire product tree
Tools >Generate CATPart from product
Enter a new part number or name
Do NOT check: merge all bodies of each part in one body
OKYou will now be able to export the CATPart in the Part Design EnvironmentThe accuracy of the .stl file is a fuction of the Display accuracy.
Tools > Options...
In the tree select General > Display
Select the Performance tab
Under 3D accuracy, select Fixed
Set to .02mm (.0008in)
Adjust Curve accuracy ration to .2
OK
File > Save As
Enter filename
Select type STL
Save
Inventor
File > Save as > Save Copy as…
Select STL
Enter Filename
Click the Options button
Format Binary
Select units
Resolution > medium or high
Click the Save button
Iron CAD
Select Part Properties then Rendering
Set Facet Surface Smoothing to 150
Select File then Export
Select .STL
Mechanical Desktop
Use the AMSTLOUT command to export your STL file.
The following command line options affect the quality of the STL and should be adjusted to produce an acceptable file.
Angular Tolerance - This command limits the angle between the normals of adjacent triangles. The default setting is 15 degrees. Reducing the angle will increase the resolution of the STL file.
Aspect Ratio - This setting controls the Height/Width ratio of the facets. A setting of 1 would mean the height of a facet is no greater than its width. The default setting is 0, ignored.
Surface Tolerance - This setting controls the greatest distance between the edge of a facet and the actual geometry. A setting of 0.0000 causes this option to be ignored.
Vertex Spacing - This option controls the length of the edge of a facet. The
Default setting is 0.0000, ignored
Pro Engineer
File > Export > Model
STL
Set chord height to 0. The field will be replaced by minimum acceptable value.
Set Angle Control to 1
OK
Revit
Revit does not allow direct export to STL files but does allow to first save as .dwg file and open in AutoCAD to create .stl files.
3D view
File menu > Export CAD format > select 3D polymesh
Save as Type > AutoCAD 2004 DWG
Think 3
File > Save As
Set Save As Type to STL
Save
