offset a profile in sketcher?

I have an extruded shape & it needs to be larger .015" all around. I
want to offset all of the the line & arc segments in the sketch by
015". The offset tab in grayed out when i try & modify the sketch. How
can i do this? I was able to create a new extruded feature by offsetting
the previous sketch & then extrude it, but i want to just have 1 sketch.
What am i doing wrong? Thanks in advance for any help or info.
john

 

You can't really do it in Sketcher. Since Sketch>Edge>Offset is greyed
out, your Sketch is apparently your first feature.

You could create a first sketch, and then another sketch and do a
Sketch>Edge>Use and a Sketch>Edge>Offset, but you still have two
sketches although one of them has both profiles in it.

Regards