Problem Description

Exporting mesh element with a high resolution from DGN to STL results in "choppy" or low resolution mesh regardless of the export settings. This can be seen when importing the STL back into the DGN.

Before exporting to STL:

After exporting to STL and importing back into a DGN:

Steps to Resolve

1. Create a new file from a seed with appropriate units.

Example:

• For a 3D printer that reads STL files in millimeters, create a new file with the seed 3DMetricGeneral.dgn.
• This seed file has working unit of millimeters.
• Default seed location C:\ProgramData\Bentley\MicroStation V8i (SELECTseries)\WorkSpace\Projects\Examples\General\seed\3dMetricGeneral.dgn

2. Reference the file containing the geometry

See:  How to attach a reference with a 1:1 scale

3. Merge the reference to master

See:  Merging Files

4. Move the geometry to the global origin

See: Export STL is not accurate

5. Export to STL

See: Exporting the Model to be Printed

See Also

Product TechNotes and FAQs

External Links

Bentley Homepage
Bentley Technical Support KnowledgeBase
Bentley LEARN Server

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