Adding Ribs Inside A Rectangular Tank

[rc0213]

I am kind of new to Creo. And, I am trying to add some ribs inside a rectangular tank. I looked online and on YouTube, but their techniques don't seem to work. Maybe I'm missing a step.

Can someone give me a way that they create ribs inside a tank?

Thanks!

 

[3DDave]

How do you expect to manufacture the ribs inside the tank?

 

[rc0213]

It is going to be roto molded. I asked the plastic company, if we can add ribs, and, they said yes.

 

[3DDave]

I would have modeled the solid part to represent the outside surface and then used the shell operator to remove the interior. This would duplicate roto-molding. Starting from where you are is a lot of little pieces patching.

 

[rc0213]

I did use the shell function after I did the basic tank.

So, what's the best way to add ribs?

 

[3DDave]

The ribs can only be made with protrusions from the mold. So unshell this, add the cuts that represent the mold features that will create the ribs, shell it again.