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Convert Your 3D Mesh/Model 3DM Files to STL

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Our free and fast tool will convert most Rhinoceros 3D 3DM model and mesh files to a standard STL (Standard Triangle Language) file that can then be edited further in most popular 3D editing packages such as Blender or 3D printed without any further processing. Our conversion tool can also batch convert multiple 3DM files, up to 25 files at a time can be converted.

To convert your 3DM file click the Upload button and select the file you wish to convert. Once selected, the file will be converted to the STL format and will be ready to download shortly afterwards. For more information about the 3DM to STL conversion process see the conversion information section below for more information.

How to Convert your 3DM to STL Online?

Here are 2 simple steps to convert your 3DM to STL.

Upload a 3DM

Click the "Upload a 3DM File" button and select a 3DM to upload. The maximum file size is 100MB.

Download your STL

Click the download link once completed to receive your STL file.

Frequently Asked Questions

How can I convert my 3DM file to STL?

First click the "Upload..." button, select your 3DM file to upload. Select any configuration options. When the 3DM to STL conversion has completed, you can download your STL file straight away.

How long does it take to convert my 3DM to STL?

We aim to process all 3DM to STL conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.

How accurate is the 3DM to STL conversion?

We aim to create the most accurate conversions with our tools. Our tools are under constant development with new features and improvements being added every week.

Is it safe to convert my 3DM to STL on ImageToStl.com?

Yes, of course! We do not store the 3DM file you submit to us. The resulting STL file, once created is deleted 15 minutes after upload and the download link will expire after this time.

Can I convert 3DM to STL on Windows, Linux, Android, iOS or Mac OS?

Yes! Our 3DM to STL tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.

What if I am using an Ad Blocker, will that affect things?

Yes. Although you can use an Ad Blocker, if you like our 3DM conversion tool please consider white-listing our site. When an Ad Blocker is enabled there are some conversion limits on some of our tools and processing/conversion times will be longer.

What STL formats can I convert to?

Our tool will save all STL files in binary format. Optionally, our tool will allow you to save to the non-standard color STL format.

I have several 3DM files, can I batch convert my 3DM to STL?

Yes! Our 3DM tool supports full batch conversions. You can upload up to 25 3DM files at a time. Our tool will convert them all as quickly as possible. Once completed, you can either download the STL files individually or download them all in a single ZIP file.

How does it work?

Converting from the 3DM file format to STL can be a complex process and any tool used for this conversion process needs to be able to handle a variety of data conversion tasks as well as identify any defects within the 3D model and fix them. Here we will explain the conversion process used by our tool to accurately convert your 3DM file to a valid STL 3D model. Lets start with the conversion process, which involves the following steps:

Step 1: Read the Source 3DM File

In its simplest form, an 3DM file is a binary data file containing 3D data such as vertices, faces, normals and more. When combined, these make up the 3D model you see on your screen.

Step 2: Process File Data

With the 3DM file data read, our tool generates an internal representation of the full 3D model and will attempt to fix any geometry issues encountered. Along with repairing any issues with the 3D model, the tool will remove any duplicated vertices and prepare the model ready for exporting to the STL format.

Step 3: Saving to the STL Format

The STL format has been around for many years and has become a standard format for 3D printing. Most 3D printing software can open STL files which means our tool now needs to take the in-memory 3D model we have created in step 2 and convert this to the STL format.

File format information for 3DM to STL

Extension3DM
Full NameRhinoceros 3D
Type3D Model
Mime Typex-world/x-3dmf
FormatBinary
Tools3DM Converters, 3D Model Voxelizer, Create 3DM Animation, 3DM Asset Extractor, View 3DM

Description

The 3DM format also known as Rhino3D or Rhinoceros 3D is a 3D graphics model file format developed and used in CAD applications, Industrial Design and 3D Printing. The format has some compatibility with Adobe Illustrator and can be exported as an AI file using vector graphics.

Although it is a 3D file format it stores data in the NURBS geometry format which allows for greater mathematically precision compared to triangle/polygon based mesh geometry formats such as STL. Along with support for converting between other CAD formats the 3DM format can also supports two different scripting languages.

3DM Notes

If your 3DM file contains textures, these will be ignored. If a material contains color information this will be translated where possible.

Supported Features

  • Mesh geometry
  • Mesh material colors

Unsupported Features

  • Textures
  • Animations
ExtensionSTL
Full NameStandard Triangle Language
Type3D Model
Mime Typeapplication/vnd.ms-pki.stl
FormatText & Binary
ToolsSTL Converters, 3D Model Voxelizer, Create STL Animation, Compress STL, Text to STL, View STL
Open WithBlender, DAZ Studio, MeshLab, CAD Assistant

Description

The STL file format has its roots in the 1980's and is the native file format for 3D Systems stereolithography CAD software. The format defines a triangulated mesh with vertices and faces and is a popular format for sharing 3D printable model files.

There were several formats that attempted to extend the STL format namely SolidView and VisCAM whose formats included limited 15-bit color information for each mesh face which is often ignored by most modern 3D software. The STL format can be either Text or Binary, our tools will support both formats.

STL Notes

The standard STL file format does not support colored faces or vertices or texture information. The STL file generated by the tool will contain only raw mesh/triangle data by default which is perfect for 3D printing.

The tool also has an option to save the file to one of the non-standard formats that support colored faces such as VisCAM and SolidView which is perfect if you want to further process the STL in software which supports these formats.

Supported Features

  • Mesh geometry
  • Face colors via the VisCAM and SolidView formats
  • Binary and Text versions supported

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