Hi John, another kind of technique that can work pretty well for this stuff is kind of along the lines of what Brian wrote previously.

But instead of trying to build a fully curved piece all in one surface what you focus on is in curving one area only and leaving the other side to be filleted.

Here's an example:



Model is attached as guitar_loft_fillet.3dm

What I did in this case was take 4 curves, and then Loft a surface through them, using the Loft Style: Loose option, which tends to reduce the bulgy-ness of the lofted result.

That has kind of built in the curvature of the lower part of the body directly into the surface.

But then I let it come to a sharp edge at the top, when then can be filleted.

This can be a generally good strategy to use - to leave a fillet for finishing off kind of the end of a shape but trying to use surfacing tools to handle the shaping of the interior parts rather than trying to use filleting for the sort of internal pieces of the shape...

- Michael