...from comp.cad.pro-engineer:
> The Offset x Offset is new stuff for me, but
> it appears what's happening is:
>
> 1) The surfaces adjacent the selected edge
> (assuming you've picked an edge) are offset
> by the input value.
>
> 2) An implied intersection curve defined by the
> offsets is pulled back normal to the adjacent
> surfaces and become the chamfer edges.
>
> If that's not clear I can post a jpg or WF2
> model to a site that allows attachments. It's
> pretty easy to see if you'll work with a couple
> of planar faces that intersect at some angle other
> than 90 degrees.
Edited by: jeff4136
> The Offset x Offset is new stuff for me, but
> it appears what's happening is:
>
> 1) The surfaces adjacent the selected edge
> (assuming you've picked an edge) are offset
> by the input value.
>
> 2) An implied intersection curve defined by the
> offsets is pulled back normal to the adjacent
> surfaces and become the chamfer edges.
>
> If that's not clear I can post a jpg or WF2
> model to a site that allows attachments. It's
> pretty easy to see if you'll work with a couple
> of planar faces that intersect at some angle other
> than 90 degrees.
Edited by: jeff4136