At Fablab it is now possible to create CAO 3D template from real, existing objects. After the 3D scan, we get a scatterplot. With the information contained in these dot, we can recreate a parametric 3D part. This 3D template can be useful if you want to modernize the manufacturing process, change or create a new part to fit with the existing object.

The CAD 3D file can also be useful to measure precisely parts, to redesign a part without manufacturing defect or to reproduce a broken part. Then, you can obviously 3D print the file.

Object

We arrange and clean up the object from which we want to get a CAD 3D file. It is then scanned. Reverse engineering is possible with all types of parts, big or small.

Point cloud

Once the digitalization of the object is done, we have a very precise and true to the original 3D point cloud. We then analyze the point cloud to eliminate the noise and to smooth the dots.

Triangulation

The point cloud is converted into a polygonal mesh. At this point, the 3D mesh can be used as it is for 3D printing, but the prototype will have the same defects as the original object.

Reverse engineering

The last step produces with the polygonal mesh a parametric part in CAO 3D. Geometric curves are generated before creating surfaces that will fit the shape of the mesh.

Possible Use

  • Measure more easily complex parts
  • Replicate a part without its manufacturing or use defects
  • Recreate a model without its CAD files
  • Analyse or improve properties of a product
  • Recreate a part in a different material
  • Replicate a broken part