Help on how to start modeling this file

Any suggestions on where to start when modeling the picture attached (except for the motor in the middle). I am fairly decent modeling "blocky" parts but don't have much experience with "rounded" parts like the one in the picture.

3 Answers

Best method for making objects is removing material means make solid objects then start remove as machine do there process.

Not entirely sure about the underside, but I'd probably start here...

The best way is to model the part by designing how it will be machined.