Pipe pushed through solid wall-Unable to delete faces

[DaveR]

@Negger

Is there a difference therefore in your method of creating a rectangle from the centre out, and offsetting that, rather than my doing a double offset from teh outer edge, which looks identical ?

The final result shouldn’t be any different but my method is fewer steps. Especially if you use inferencing instead of the guidelines to find the center of the sump base.

@Negger

“Right click on the face of the inner square and click Erase.” - I would have expected that to have been the upper face of the base, so you effectively created a double skin i.e. one on the upper surface of the base, and one on the lower (unwanted) surface of the chamber ?

All along you’ve been showing the sump base and the chamber as two separate elements so I’ve been doing the same thing. Are they in reality a single monolithic structure? i.e. Cast as a single piece of concrete?

@Negger

I have been able to separate the chamber from teh base in your drawing , with both parts remaining complete, yet it doesn’t show in Entity Info as being a solid, despite it being a component, and presumably complete ?

Each of the components I created are indeed solids. Note Entity Info’s report of 2 solids selected.

If you did something incorrectly, one of them might not be solid. I don’t see your results, though.

@Negger

thought that creating components and then grouping the original, would have kept the geometry separate, and prevent it merging-

Making a component is enough to keep the geometry separate. Creating either a group or component has the effect of putting a wrapper around the selected stuff. In your previous model, you had some stuff wrapped multiple times.

@Negger

Why did my base pull apart, despite being a group ?

Using the wrapping analogy, the sump base and the chamber were already in their own wrappers and you put more wrappers around them.

@Negger

I had expected that all three would have been components-does the original not then become a Component itself when you “make Component” ?

At some point you did something to make them groups instead of components. Maybe you exploded the component and then made the group. Exploding a component or group is like taking the wrapper off and throwing it away. (Editing a group or component is like opening the wrapper to make the changes but then closing up the wrapper after you’ve finished with the changes.

I’ll send you a link to a video that might help.