Boolean Union Failed

[kj1 (Kj)]

Hello everyone
Im trying to use boolean union here, to union all these rails, but the rails that I’ve highlighted in the photo keeps failing. I’ll include the file, if anyone wants to look at the model. Can you tell me why it’s keeps failing? What am I doing wrong?

Køkken ophæng.3dm (10.8 MB)

[kunf]

Hello

You have some naked edges which they don’t allow you to use BooleanUnion

Thanks

[kj1 (Kj)]

Thank you! How do I fix this? Can i close the naked edges?

[kj1 (Kj)]

Omg… i realized what the problem was… somehow these rails weren’t capped. I dont know how I overlooked it. Thank you for showing me the naked edges!