Hi Anis,

> Use Edit/Separate...
> We still need two more steps to finish the model :
>
> 1. Close hollow caps
> 2. Rejoin surface

Yes - but that's not unusual or unintended that you may need to use more than one tool to complete a model.

Using more than one command in combination with each other can help to prevent each command from becoming too complex - if commands end up with dozens and dozens of options in them, they tend to become more difficult to use.

It's a major goal of MoI to not be difficult to use, so that's why I tend to resist adding in options too rapidly when there are other existing ways to produce the result.


If a some industry tended to need that kind of result on complex sweeps often, probably the best way to approach it would be to have a plug-in command that could process the result of a sweep to automate that sequence of separating and solidifying the components.


Also, it's actually easy to be more efficient in the use of the existing tools than what you show in your screenshot - you don't actually need the rejoin step.

Instead of separating the model into completely individual surfaces, you can instead select these 2 sets of faces (with a crossing right-to-left window selection after having selected just 1 face first):



With those pieces selected, you can then use Edit/Separate and the model will separate into 4 pieces instead of into completely individual surfaces, so you get a result like this which is ready to have Planar applied to it:




That's a feature of Separate - if you have a set of face sub-objects selected, Separate will break that collection of faces apart from the main piece but still keep them joined to one another. You can use that to more strategically break off some sub structure of an object without having to do a re-join after.

- Michael