Request to Increase Model Size Limits in Autodesk Inventor

[milan_trnka]

I would like to request an increase in the maximum model size limits within Autodesk Inventor. Currently, the model space is constrained to a cubic volume with ±100 meters in each axis (X, Y, Z). This limitation can restrict design possibilities, especially for large-scale assemblies or infrastructure projects that require working with very large components or extended spatial arrangements.

Increasing the model size limits would significantly improve Inventor’s usability for professionals in industries such as civil engineering, aerospace, energy, and large machinery design, where larger-scale models are common. It would also reduce the need for workarounds such as splitting models into multiple files, which can complicate project management and increase the risk of errors.

Benefits:

• Enable modeling of larger components and assemblies directly within Inventor

• Improve project accuracy by keeping full models in a single file

• Enhance workflow efficiency by reducing the need for workarounds

• Cater to industries requiring large-scale design capabilities, including energy and infrastructure sectors

Thank you for considering this important enhancement for future versions of Autodesk Inventor.

https://help.autodesk.com/view/INVNTOR/2025/ENU/?guid=GUID-84623939-38A8-49BF-8D97-BB9DA3697056 

[AnthonyHarris90842]

@milan_trnka

AAs a work around scale your models down by 10 in the main assembly. 

[milan_trnka]

@AnthonyHarris90842  

This workaround is effectively an emergency solution to bypass the model size limit. It is not ideal because it introduces an unnatural scale and can cause complications during further processing and interpretation of the model.

For professional, precise, and long-term work, it is best to have a genuine increased model size limit, which is the solution suggested by the original idea to increase the modeling space.

So, if you only need to quickly bypass the limit, scaling helps, but for important projects or larger scopes, it is just a compromise solution.

[SteveK88]

Curious, I've known of this limit for sometime but it has never affected our workflow.  We have assembly models that span +7 acres, largest is ~10 acres.  So, we will have dimensions beyond 100 m in the X-Y direction.  The Z direction (up) rarely exceeds ~20 meters.  We have not had issues with this.  Origin. 0,0,0 is placed towards the middle of the model.  

I suggest this limit is dependent on all axis exceeding the 100m. (?) or a continuous part (ipt) model being +100m. (?)

7 acre models are about 800 ft x 400 ft (240 m x 121 m) or about 555 ft (170 m) square