How do I make a cutout in compass 3D?

Question

3D

Here is the detail drawing. I need to do something like a 45 degree bevel inside the pipe. Marked on the screen with a segment. Tried everything I could, doesn't work. Help!

Answer 1

You would at least throw off the model somewhere as a file ... I do not like the process of building in the compass.
It is necessary to make a "Cut by rotation". Build some kind of sketch:
And when cut by rotation, it will build something like this: