Extrude to distance without overlapping another body

[filippo.martinelli]

Sometimes I have to extrude a profile to min( distance, surface of a body).
It is easy when the profile is smaller to the body, I can estrude to object following its surface.

What can I do when the profile is bigger than the body ?

For example I want to extrude for a maximum of 20 mm, but make the extrusion follow the body surface without entering it.

Which is easiest way to achieve this goal ?

Thanks

[wersy]

Just extrude "New Body".
Then combine Cut (Keep Tools).

[filippo.martinelli]

Not exactly what I need. With combine cut I cannot 'remove' the part of the extrude which goes beyond the object.
In the first post I tried to attach a sample project to explain better what I want to achieve.

[wersy]

Do you mean this?

You could create an offset surface, extend it, and use it for extrude to body.

[wersy]

You can also use the arc of the sketch to split the body.

[filippo.martinelli]

Thank you very much for your help, I knew it wouldn't be easy to explain exactly my ideas due to my poor technical language.

The solid on the red circle is a simplified version of what I want to do. The extrude stops at the set distance in free air, but when it intersects a solid objects it stops immediately following the contact surface. In this example I can solve with two different extrusions, but I'm looking for a general and easy procedure.
Anyway the offset surface you suggested can be handy in other cases👍

[TheCADWhisperer]

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@filippo.martinelli wrote:

I'm looking for a general and easy procedure.

 👍 

Multiple features.