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ZMT zurich med tech

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  4. Problem with Boolean operation

Problem with Boolean operation

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  • L Offline
    L Offline
    lsc
    wrote on last edited by
    #1

    Re: Boolean operation with Anatomical models

    Hi all,

    I have a problem that looks similar. I would like to create a simulation of a transducer on a MIDA model of the head and would like to put a silicon patch between the transducer and the head. My idea was to do a boolean to substract the head on a small cylinder (reprensenting the patch). However, everytime I am doing a boolean this way, there is this error showing up:

    Modeler : [Error] CSG failed, exception: C:\projects\carve\lib\triangulator.cpp:1051 "didn't manage to link up hole!"
    Modeler : [Error] operation unsuccessful
    Modeler : [Error] [Subtract]: operation unsuccessful
    Modeler : [Error] operation unsuccessful
    Which I don't understand....
    In more it creates weird shapes (probably due to my mesh).

    Capture.PNG

    Do you have an idea of how I could create those patch to be sure that they are perfectly aligned with the head and without creating unwanted shapes.

    Thank you for your help !

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    • brynB Offline
      brynB Offline
      bryn
      ZMT
      wrote on last edited by
      #2

      I think the error "didn't manage to link up hole" usually occurs when the two objects (involved in the boolean operation) have nearly parallel touching surfaces. You could try:

      • (always first make sure surfaces are manifold)
      • make the cylinder overlap more with (deeper in to) the skin
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