STL에서 STP 형식으로 3D 모델을 변환하는 방법 2

 

https://grabcad.com/tutorials/how-to-convert-stl-to-step-using-freecad

How to convert STL to STEP using FreeCAD | GrabCAD Tutorials

 

How to convert STL to STEP using FreeCAD

Sar Dar

23 Jul, 2018 11:17 PM

This tutorial covers how to convert an STL to a STEP using FreeCAD.
Note: Since STLs are meshes, the resulting model won't be as precise as parts originally made as solids.

FreeCAD can export:
- Step
- Iges
- Scad
- Dxf
- Dwg
- Obj
- Pdf
And many others…

1. Step 1: Install FreeCAD
2. To start off, make sure you have FreeCAD downloaded and installed
3. Step 2: Import STL
4. 
5. Go to "Part" workbench
6. Open your STL part in FreeCAD
7. Step 3: Convert from Mesh to ShapeSet your mesh sewing tolerance in the pop up windowFreeCAD will now create a new shape in the model tree
   • There will be no analyzing or validating of the mesh object.
   • Analyzing and repairing of the mesh (if needed) should be done manually before conversion.
   • Appropriate tools are available in the Mesh Workbench.
   If you're looking for a fast solution to get a Step exported now would be the time to export it. However, if you want a less triangulated solid or Boolean operations performed, then follow these next steps...
8. Limitations:
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12. Go to Part / Create shape from mesh...
13. Now, select the imported STL part in main view or the model tree.
14. Step 4: Simplify ShapeYet another part will be added to your model tree, now simpler!
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17. To simplify this part, now select the shape and go to Part / Refine shape
18. So you now have a shape to work with but as you can see there's still allot of triangulated faces
19. Step 5: Convert Shape to SolidSelect your now simplified part and go again to the Part menu, this time selecting "Convert to solid"And one more time a new solid will show up in your model treeQuick Tip: Selecting a part in the model tree and pressing space will hide that selected part. This makes it easier to see the newly made shape. Hidden parts will now appear greyed out as seen in the above picture.
20. 
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22. Now, to convert the shape to a solid that Boolean operations can be performed on...
23. Step 6: ExportAnd you're done! You now have a Step file from a STL file!
24. 
25. File / Export
26. Select the model you want to export, in this case the fourth part in the model tree
27. Step 7: Resources
    • https://www.freecadweb.org/wiki/Part_ShapeFromMesh
    • https://www.freecadweb.org/wiki/Part_ConvertToSolid
    Working with meshes in FreeCAD:
    • https://www.freecadweb.org/wiki/Mesh_Workbench
    Prusa LCD stand:
    • https://grabcad.com/library/3d-printer-lcd-stand-1
28. STL to solid conversion: