Solid element operations problem

[Anonymous]

Hello,
I have problem with solid element operations. When I subtract wall with roof then filled air space. Whats wrong?

[Erika Epstein]

When you do an SEO, you have a choice of the trim
New Surfaces of target: to choose either
'inherit attributes of operator'
or
'Use their own attributes'.

It looks like you chose the first option which turns the part of the roof that trimmed the wall to be the same material as the wall.

Instead, use the second option.

[Anonymous]

Erika wrote:
When you do an SEO, you have a choice of the trim
New Surfaces of target: to choose either
'inherit attributes of operator'
or
'Use their own attributes'.

It looks like you chose the first option which turns the part of the roof that trimmed the wall to be the same material as the wall.

Instead, use the second option.

Im using ,,Use their own atributes". When I trim with SEO always walls tops painted.

If i use first option. I added photo.