Why Does Brep Join Fail?

Hey All

I know in OG rhino Boolean union is a real pain, and can fail for a multitude of reasons. Well I am having trouble here with brep join. As in the picture, my brep join won't work, yes the pipe is capped. What is the deal?

Thanks

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screenshot_Wed_Mar_02_17.13.30.png, 443 KB

Replies to This Discussion

Permalink Reply by mark zirinsky on March 2, 2016 at 6:10pm

try setting your rhino document tolerances to 0.000001"

Permalink Reply by Ol OneEye on March 3, 2016 at 11:14am

Don't you mean increase document tolerance, not shrink it? I increased my document tolerances and solid union worked

Permalink Reply by Hyungsoo Kim on March 3, 2016 at 1:28am

Two closed brep join? I don't know how that's even possible.

Instead, How about using "Solid Union"?

Permalink Reply by Ol OneEye on March 3, 2016 at 11:14am

Yes that worked, this is my first time combining breps, I wasn't sure what command to use.

Thanks

Permalink Reply by Nik Willmore on March 3, 2016 at 12:21pm

In the future, if a Boolean fails add a jostle or somehow move the parts every so slightly to avoid kissing surfaces that fail to penetrate one another boldly enough to define a clear intersection curve for the Boolean black box to work on. If you have to move something 0.001 or 0.005 units you won't notice it but it can truly fix Boolean failures. To diagnose Booleans, use BrepBrep to visualize the intersection curves, looking for weird artifacts where there should be clear loops.

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