Hi NightCabbage,

> What's Shell?

There's some info in the help file:
http://moi3d.com/1.0/docs/moi_command_reference7.htm#shell

The help file reference index is available here for browsing:
http://moi3d.com/1.0/docs/moi_command_reference.htm, it's a good place to look if you want to get some general info on how a particular command works.


> Ok so I figured that part of my problem was because I wasn't
> using solid objects (for the exhausts?)

Yeah, usually for doing the booleans you will want to be working with solid objects instead of trying to combine a solid with a surface like you had in this case.

Normally if you do a Loft between 2 circles you should get a solid though, unless you turned off the "cap ends" option?

Otherwise, you can select them now and run Construct / Planar to cap the ends off now, or like Burr mentioned use Construct / Shell if you want to thicken the surface into a solid which will be kind of like a hollowed out cone.


> So you boolean intersecting solid objects, and you join touching lines.

Yup!

You can also use join on surfaces as well, if you have 2 surfaces that are touching at a common edge, then join will glue them together and they will then have a joined edge between them.

When you have a set of surfaces that have all edges joined to another edge, then that is what makes a solid.

It can be convenient to work with solids, because the booleans are set up to work on volumes, and determine which pieces to keep and discard based on that.


> Maybe someone could check it out and see if it's done right?

Seems to look all ship-shape to me!

To make a more complex model you just keep doing what you've been doing and adding more and more pieces.

- Michael