Solid Boolean Operation Problems With Examples

[Jonathan_Garrison]

Can anyone explain why these various boolean functions fail on these two closed breps?

Any ideas about how to get consistent success with boolean functions would be greatly appreciated.

GH_Solid_Operations_Problems.gh (148.9 KB)

[Ali_Najmaei]

Type Options in Rhino command bar , click on Units , change the Absolute tolerance to a lower value like 0.00001 ,both in Model tab and Layout . Then it should work :

[Eef_Weenink]

I learned on the forum to rebuild a brep and most of the times it solves the issue:

GH_Solid_Operations_ProblemsEW.gh (153.2 KB)

[Jonathan_Garrison]

Thank you both so much @Ali_Najmaei and @Eef_Weenink, both of your solutions worked and solved a very frustrating problem.

[dale (Dale Fugier)]

@Ali_Najmaei

Type Options in Rhino command bar , click on Units , change the Absolute tolerance to a lower value like 0.00001 ,both in Model tab and Layout .

Please don’t do this, as this is not a good solution.

– Dale

[dale (Dale Fugier)]

@Jonathan_Garrison

Can anyone explain why these various boolean functions fail on these two closed breps?

Bake your geometry to Rhino and run BooleanUnion - you’ll see some surface intersection issues.

– Dale