Autodesk Inventor

[#1]

I use the Key Design Accelerator, i suceded in making the Keyhole in the shaft, but cannot complete the selection for the hub.

I selected the 2 hub's faces, but am stuck in the third and last selection box for the hub, the Second Reference

[#2]

Reference 2 for the hub is the ID (circle).  See attachment.

[#3]

How did you select the circle that you showed me in the picture you attached?

It is hidden behind a part, and when i pause over the approximate location-nothing appears, i don't get the ability to choose hidden objects, i don't get the small green square with the 2 arrows, i don't know how it's called

[#4]

Even if i turn off visibility of the obscuring feature i still cannot select the circle you showed me

[#5]

I want the keyway to be only in the gear, not the circular plate which is around the shaft.

If i select the 2 faces of the gear i cannot select the bore of the gear, only if i select, a one of the faces, the circular plate then the keyway in the circular plate is created.

That isn't my intension.

[#6]

It seams i cannot make a keyway in the gear, maybe because it's an iFeature? is it an iFeature?

[#7]

There is no hole in the gear. Try putting a hole in the gear.