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joe_c14-Alexandrite
14-Alexandrite
October 2, 2025
Question

Boolean Operations within Assemblies

  • October 2, 2025
  • 2 replies
  • 791 views

Folks

 

I have an assembly with two components in Creo 10.. Intially, i had a subassembly instead of the shrinkwrap part but these boolean operations wont recognize assemblies. 

The cylinder represents the cavity that we are restrained.  the part represents our final 3D print part that fits inside the cavity. So I want to cutout all the external geometry from the tetras part outside the cylinder volume. I tried picking either one as the modified models/modifying components without any results. Tried different sizes of cylinder and no good.

 

I wonder if i should use the "create part intersect" which also didnt work.  

Any ideas please share

 

thanksAssembly-w-cylinder .pngAssembly-modeltree.png

2 replies

tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
October 3, 2025

Is the intent to fill a shelled (hollow) cylinder with a solid lattice? If so, are you not able to do this with the lattice fill functionality?

 

Regarding assembly Boolean ops.

Are you able to confirm that the following requirements are not an issue with your models?

You cannot perform (assembly operations) Boolean operations on the following components:
•Parts intersected by an assembly feature
•Another occurrence of the same component
•A component containing a merge feature from the modified part
•An empty part
 
A multi-body part model of the lattice would seem to be something to try. You should be able to cut all of the lattice bodies using a cylinder in part mode.
J
joe_c14-AlexandriteAuthor
14-Alexandrite
October 3, 2025

hello

 

i couldnt get it to work with lattices maybe is the shape size.  If it fails to recognize the part in boolean operations, it will do the same elsewhere.?  But you bring good points.

 

"•Parts intersected by an assembly feature"

wouldnt this go away if we use a shrinkwrap (surface method). ?  in any case, parts assembled did intersect and i never bother to remove the interfered surfaces (see attached).. is this what you referring to?

 

a multi-body can worK but i will run into the same issue as above if thats the culprit. Plus I dont want recreate everything again so i prefer to use what i currently have

 

thanks 

tetra-assy.png

tetra-multibody.png

 

tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
October 3, 2025

"....(see attached).. is this what you referring to?"

I am not able to tell what the issue is from looking at the screen shots posted. Is your unit cell geometry all created in a part model as a single body? If you post your models, you may get some relevant feedback.

 

Keep in mind that the lattice generation and shrinkwrap are not standard "solid geometry" features in the context of solid modeling. I have not used either of these in the manner that you are attempting so I cannot offer any insight on them in this context. Shrinkwrap creates an approximation of geometry so not surprising that it may not be valid for use with a Boolean operation, it may look like a cylinder but it may not "be" a cylinder in the geometry kernel.

 

A
anursinghCommunity Manager
Community Moderator
October 22, 2025

Hi @joe_c,

 

I wanted to see if you got the help you needed.

If so, please mark the appropriate reply as the Accepted Solution. It will help other members who may have the same question.
Of course, if you have more to share on your issue, please pursue the conversation. 

 

Thanks,
Anurag 

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