Fixture Block

I started off the process by sketching the side profile of the model and extruding it out. Then I started a sketch on the face parallel to the top plane and created the slots and circles to be cut, and using fillets to smooth them out. Then sketched a rectangle on the top plane to be extrude cut through the correct geometry. Lastly, creating a sketch on the slanted face and extrude cutting it down through the model.