Home > Supported File Formats > 3ds Max to DGN

How to convert 3ds Max (.max) to DGN (MicroStation)?

PolyTrans|CAD+DCC performs mathematically precise CAD, DCC/Animation, GIS and BIM 3D file conversions into all key downstream 3D packages and file formats. Okino software is used and trusted throughout the world by many tens of thousands of 3D professionals in mission & production critical environments, backed by respectable personal support directly from our core development team.

3ds Max

3ds Max has been the flagship DCC/Animation system of Autodesk since its introduction in 1996. It replaced 3D Studio R1-R4 which was a DOS based variation. Both were developed by the Yost Group and licensed to Autodesk.

As is very little understood, no program on this planet can read or write 3ds Max ".max" files because the full geometry modifier stack of the 3ds Max software, and its various plugin modules, are needed in order to properly evaluate the file before it can be rendered. This is what forced Okino to write its PolyTrans-for-3dsMax system, which allows for all Okino 3D converters to run within 3ds Max itself. For example, if you want to convert to/from CINEMA 4D (.c4d files) then you would do so entirely inside of 3ds Max.

Okino has a very long history with 3ds Max as it got on board in 1986 when Tom Hudson (of the Yost Group) first released "CAD-3D" on the Atari|ST computer. That program morphed into 3D Studio on DOS (.3ds file format) and then into 3ds Max (.max file format).

Note: Please do not confuse the 3D Studio's .3ds format with the 3ds Max .max format. You will find throughout the 3D industry that some companies refer to .3ds as the "3ds Max file format" but this is not true. The native file format of 3ds Max is the .max format, whereas .3ds is just a legacy import/export file format ported over to 3ds Max by Tom Hudson during the transition from 3D Studio R4 back in the early 1990s. DO NOT use the .3ds file format to convert to/from 3ds Max but rather use Okino's dedicated PolyTrans-for-3dsMax plug-in system for 3ds Max.

DGN

DGN is a 2D/3D file format, with its roots going back to the early 1980s, that is used as the native file format of such programs as Bentley's MicroStation and Intergraph's PDS software packages. Relative to deep history, DGN could be considered a competitor or rival to the Autodesk DWG file format. Okino considers both DGN and DWG rather "crude" and old file formats, depending on what vintage of file is used and whether the files contain ACIS-SAT/Parasolid "BREP solids" geometry or just 2D/3D vector geometry.

Okino considers a DGN V8 file to be of two varieties: (1) "GIS" like models defined using basic primitives like lines, curves, arcs and 3D objects defined by the extrusion and revolution of these basic elements - these types of files are typically glutted with an enormous number of basic elements which can result in massive scenes that can very slow to display and take up a lot of memory. (2) The second variety of DGN file uses the more modern "BREP solids" geometry type to define the 3D objects as lighter weight and more efficient NURBS surfaces and solids.

Okino spent over 20 years developing its DGN importers and exporters. As such, we understand the nuances of DGN and its related conversion issues. Please refer to our DGN importer WEB page which has extensive information on (1) the history of DGN and when to use DGN, (2) how to import massive DGN files (such as PDMS 3D plants, oil refineries, etc), (3) how to import from AVEVA PDMS and Intergraph PDS, and (4) our suggestions about using STEP or VRML2 as alternative conversion methods from Bentley's MicroStation.

3ds Max import converter's overview

DGN export converter's overview