Extruding from square to round

Can't figure it out how to do it. Can anybody help?

2 Answers

I would use a lofted boss/base for this if you want to do it the simple, solid way. Lofted surface would be more appropriate for a more complex surface model, but here's how you loft a solid boss.

Answered with a tutorial: https://grabcad.com/tutorials/extruding-from-square-to-round

use Loft to do that.