Substracting Volumes

[[Na...]]

Hello everybody. I am quite new into Zeiss Inspect Xray 2025 Pro and after many unsuccessful tries i am addressing to this forum hoping that someone could help me.

I have two Volume data acquired with Zeiss Metrotom 800. I would like to align this two datasets first using a best fit and then make a Volume difference between them which should result in a new Volume. Of course i have tried different options, Meshing the volume at least for the alignent. WQould also love to Create a volume region from the part and maybe then the substraction works...at least in this direction i am going but still , alignment is a pain. I know volumes can not be aligned and i just need a mesh for Cad but still, any work around would be great. 

Can someone tell me a viable option that works?

Thank you in advance.

Edited February 19

[[DW...]]

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 You can align a volume to a CAD, see screenshots. If you do not have a CAD to align your volume, create a mesh from your volume, align that normal to the global axes using a 3-2-1 alignment, and then turn the actual mesh into a "CAD". Once you do that, delete the 3-2-1 alignment and the CAD stays oriented normal to the axes. From this, do an initial alignment>prealignment (volume). Now your volume is aligned normal to the axes so you can clip through normally. 

 

Edited February 19

[[Na...]]

thank you for your answer. now i have a CAD generated from the Volume 1 mesh (actual to CAD)  that is aligned with 3-2-1 to the global axis. The volume 1 is still somewhere else(doesnt follow the mesh). Nevertheless, i still have a Volume 2 with coresponding Mesh and no alignment. How do i align the Two volumes, or the Two meshes, or CAD to Mesh so that in the end I get some aligned data from this two different Volumes (same part, measured at different time intervals) so that i can make a volume difference (substraction) Volume 1 - Volume 2 to be able to extract the difference (volumetric) as a new Volume which is my end goal?

Best regards,

Edited yesterday at 07:42 AM

[[DW...]]

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 I am not sure I am following exactly what you are trying to do, but after creating the "CAD" you align the volume to the "CAD" by doing an initial alignment>prealignment (volume). 

[[Na...]]

Hello DWC,

I have two scans from the same part which is a stone cube. First scan was made last year and the second last week. I am trying to find how much volume is missing from the second scan in comparison to the first (the cube was frozen for several times and then it lost some amount of material). And i would like to see this missing volume and to be able to export it as a new 3d mesh.

I am able to make a best fit alignment with the parts as the missing material affects only one of facets of the cube therefore i can align using the other faces.

But what i dont understand here is how to make this substraction. From what i read it seemsthat  need a boolean substraction operation but f Zeiss Inspekt its only able to do that with volume regions not with volumes, materials or meshes. When i tried it, program said he cant do it because the volume regions are from different parts. 

In which direction should i go? I mean we have: volumes, materials, volume regions, meshes. With which elements and with which substraction operation could i perform that?

Should i import the second cube as a new part, inside Part 1 or as another stage?

Any hint about a possible workflow would be greatly appreciated.

 

Thank you and have a nice day.