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Can't intersect, subtract or union 2 solids

Anonymous

Can't intersect, subtract or union 2 solids

Anonymous
No aplicable

Hello, I need help from an experienced user - I have 2 solids made by extrusion but I cannot intersect, subtract or union them for some reason.

 

I can't quite understand what's wrong and don't know where to look for a fix. Something is definitely wrong here. Please help, I've attached a file.

 

UPD: it has something to do with REGION extrusion. The solid with bump on top was created with spline and converted to region, then extruded. This solid is causing the unexpected behavior, could you please suggest - how to "normalize" it?

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Soluciones aceptadas (2)
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4 Respuestas
Respuestas (4)

natasha.l
Alumni
Alumni
Solución aceptada

Hello @Anonymous

 

When using Intersect for example the objects need to overlap. The Intersect tool worked fine on these objects. I recommend reviewing some videos on how to design with AutoCAD 3d tools. 

 

Please "Accept Solution" if a reply or replies have helped resolve the issue or answered your question, to help others in the community.

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parkr4st
Advisor
Advisor
Solución aceptada

scale the piece on layer 2 from the center point of one end  by .999 or .9999 and it subtracts.

 

surfaces identical don't subtract well?

 

 

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natasha.l
Alumni
Alumni

Hello @parkr4st

 

Yes, the objects have to differ in scale & volume. It is best to make one object larger then the other. 

Usually when you receive 3d tool errors it b/c there is something wrong with the objects. 

 

Please "Accept Solution" if a reply or replies have helped resolve the issue or answered your question, to help others in the community.

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Anonymous
No aplicable

Thank you for the answer. As far as I understood - if multiple surfaces of 3d objects have same coordinates the program sees them as one (probably to reduce redundancy for calculations). However there is a fine trick to overcome this. One can reduce number of "same" surfaces, I think it must be 3 or less and still complete desired action.

 

In any case - I redesigned my approach for such 3d solids in such a way that they still don't overlap but retain the necessary shape.

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