What is wrong subtracting this mesh

Hi,
I’m trying to do a boolean mesh subtraction but I keep getting strange results. can anyone diagnose this.
(I’m using Rhino 5 on windows 10)

By the way, how do I send my .3dm file to this forum in order to show the problem?
thanks, crouchorama

Drag and drop a file into a post or use the upload icon to select and upload a file…

Thanks Martin,
Here is the .3dm
testcap.3dm (1.1 MB)

From the command line try MeshRepair, then FillMeshHoles.
Then do MeshBooleanDifference.
Never used v5 myself, hopefully those commands are there and work just as well.

1 Like

Greetings,

maybe this will help.

First i rebuilt the upper body with the command _revolve.

You can use the command _Cap to close the body. This will create planar surfaces on the top and bottom.

Use the command _Mesh to create a mesh from the polysurface with finer settings.

Finally in the video you can see, that the _MeshBooleanDifference works properly.

Best regards
Sergej