1. Why do EinScan files not work with my CAD software?
The EinScan exports mesh data (STL.OBJ. PLY. etc…), those are composed of a large number of triangle (polygons). Traditional CAD software reads parasolid files (IGES, STEP/STP etc…), these files are composed of a set of shapes that are mathematically defined. Therefore, for CAD software a mesh is interpreted as a very large number of planes. Often the direct conversion from mesh to CAD format is limited to small files.
The transformation from mesh to CAD data is called Reverse Engineering. The mesh is imported into the CAD interface and is used as a visual or matching reference for the construction of the CAD model.
Solid Edge SHINING 3D edition is bundled with EinScan for this purpose. SHINING 3D has developed partnerships with multiple software companies providing Reverse Engineering solutions among them, Solid Edge, Rhino & mesh2surface, DesignX, and Geomagic for Solidworks.
2. How to scan human hair?
Hairs are difficult to scan as they reflect light in random directions, you can try to apply dry shampoo or mat color spray on the hair to turn them mat. Einscan H is suitable for scanning human hair, please check if you have such demand.
Or do the post processing with a mesh editor. You can find some library or draw hair using 3Dmax, Maya, Blender, Z brush. These kinds of software require advanced skills.
3. How to choose the proper operation mode with Rapid?
Classic：
15 frames / sec
Direct scan with selected resolution
Good for: small parts, middle resolution scan.
Lightning：
30 frames / sec
Scan with 1mm resolution
Interpolation to selected resolution when end scan
Good for: large part with low resolution scan
Lightning + Refine：
30 frames / sec
Scan with 1mm resolution
Parallel capture of frame data
Refine to selected resolution after scan, by retopology, using the frame data
Good for: large part, allow recalculation of the resolution.
4. Why other graphic cards with “higher spec” are not compatible with EinScan?
EXScan Pro is optimized for Nvidia GTX graphic cards. The resources allowed for scanning are different from the ones required for CAD or gaming. The use of other cards, outside of the recommended ones, can result in the software lag or crashes.
5. How to scan dark objects?
Once you are at the optimal working distance, increase the brightness, until some data is captured. However, with higher brightness settings, more noise is captured.
For a better result you can, prior to scanning, apply some spray on the surface:
Scan spray for metrology applications, is projecting an extremely thin layer, so the shape is not affected.
DIY solution: flour or baby powder can work too.
6. How large of an object can I scan with the EinScan Pro 2X/2X Plus?
Scanning large objects can be challenging because of:
The numerical limit of the software,
The maximum distance in one direction is 4m. the size limit is 8000*point-distance. Therefore, you reduce the resolution to achieve singular large scan data
The cumulative error
The further you go the less accurate the data. Start from the middle of the object and follow a spider path towards the edges to reduce risk of tracking loss.
If you misalign, recovering tracking can take long as there may be multiple possibilities of matching areas. The use of markers is highly recommended for large parts.
The computer capacity
The bigger the object, the larger the file. To improve this, register the GMF and construct the large file as a puzzle of smaller scans with a 3rd party software.
7. How to post process the data? Fill more holes, erase some of the scan?
EXScan Pro mesh editor offers:
Watertight or Unwatertight models
Simplification (decimate the mesh)
For Unwatertight: Fill holes respecting curvature, up to 100mm perimeter, and fill markers holes
Sharpen and Smooth option
Brightness and contrast of the texture
For more options on these or other features we recommend meshlab or meshmixer (both free software) or Geomagic Wrap.