Can't do this boolean. Any help?

Hi all,
I can’t do this boolean difference between the “sphere” and the arcs.

For example (only for the 2nd arc):

This is the file: TEST-Boolean.3dm (305.7 KB)

Any help will be greatly appreciated,

Hi Gilbert - this works so far here- is this the result you are after?



@pascal It’s exactly what I want. Now I’ve tried again and it works… Let me do another example… (just few minutes). Thank you.

@pascal can you try the boolean difference with this file? TEST-Boolean-2.3dm (1.1 MB)

I get an error…

Hi Gilbert - the problem is this - the tube surfaces come tangent to one another at the ends so that for some distance they are very nearly coincident and at the ends, coincident. Boolean operations depend, conceptually at least, on there being a clean curve of intersection between two objects and where surfaces are nearly coincident this curve become harder and harder to find and may not exist where surfaces are completely coincident. Luckily, in this case, you can make your arch pattern a different way - see the attached file - does that have what you need?

TEST-Boolean-2_PG.3dm (398.5 KB)


That’s perfect! Thank you again very much!