Inventor General Discussion

Inventor General Discussion

Active Contributor
Posts: 49
Registered: ‎10-10-2008
Message 1 of 3 (218 Views)
Accepted Solution

How to manually change c.g. location?

218 Views, 2 Replies
10-23-2013 06:02 AM


I need to manually overide the weight and location of the c.g. inside a parts iproperties.  I know how to overide the weight, but I do not know how to manually overide and modify the location of the c.g.


Does anyone know how to do this?

*Expert Elite*
Posts: 1,202
Registered: ‎06-19-2006
Message 2 of 3 (191 Views)

Re: How to manually change c.g. location?

10-23-2013 10:33 AM in reply to: nsulli15

I think you will have to trick IV a bit.  The CG of parts depends on the density (or mass override) and the shape of the part. 


If you want to move the CG without changing the part shape, try this:


1. Set the part mass as small as you can.

2. Place the part in an assembly. Ground it.

3. Make a new part (name CG adjuster?). create a cube in the part and set its dimensions to somthing small compared to your part from step 1.

4. Set the mass of the CG adjuster part to the correct mass of the orginal part.

5. Place the CG adjuster part in the Step 2 assembly.  Create constraints to the part and move it to match the desired CG of the Step 1 part.

6. Set the assembly to inseperable in its document settings. I think that this will hide the components of this assembly in any upper level assembly BOM/Parts List.

7. Use this assembly in your upper level designs, not the part in step 1.


There may also be a multi-solid body workflow, but i have not tried it.


Inventor 2014
Vault Professional 2014
Active Contributor
Posts: 49
Registered: ‎10-10-2008
Message 3 of 3 (188 Views)

Re: How to manually change c.g. location?

10-23-2013 11:02 AM in reply to: swalton
Thank you. I think this is a good solution.

Nick Sullivan
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