Extrude from plane inside curved surface

[Anonymous]

Hi,

I've looked almost everywhere but the answers I find are not for my problem.

I do I extrude a sketch from a face to a curved face inside the solid? I want to extrude the sketch circled in blue to the very top face, but I only want the inside part. I'm using Inventor 2019.

Many thanks in advance.

[JDMather]

Attach your *.ipt file here.

[Anonymous]

Attached

[SBix26 · Accepted solution]

I think it's easiest to do it in two operations (see attached 2019 file):

I used your (not fully constrained!) sketch to define a workplane, then extruded To Next in each direction.

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Sam B
Inventor Pro 2021.0.1 | Windows 10 Home 1903
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