Extrude projected sketch

[casperhofstede]

Hello,

I created a 2D sketch and projected this on a surface of a converted sculpted body. I can clearly see all the nice red lines but have no possibility to select them when extruding. I would like to cut that sketch about 1 mm deep from the top of the surface.

Can any one point me in the right direction?

[TheCADWhisperer · Accepted solution]

Can you Split the face and Thicken-Cut?

Another option (depending on design intent) would be to offset the face as a surface and then Extrude cut to the offset surface.

If not, can you attach your *.f3d file here?

[casperhofstede]

Thank you CADWhisperer, your whispers pointed me in the right direction.

In the end I had to split face twice (for both sketch outlines) and whas then able to "Press Pull" the area I wanted. Attached a picture of the end result.

[TheCADWhisperer]

I don't have time to test it out - but I'm wondering if you could have used two simple rectangles in the sketch and added the Chamfers as features.

Not sure that would work because of the curved faces - but it would be very interesting to know.  If you give it a try - post back and let us know.

[casperhofstede]

Interestingly the chamfer works very nicely. Which is great, because there is no chamfer sketch feature!

See attached picture for proof.

[TheCADWhisperer]

Thanks for posting back the results of the test.  I usually place Fillets and Chamfers as feature rather than in Sketch, but I wasn't sure that workflow would work on this part.

It is surprising to me that there is no sketch chamfer.

[raythilist]

Hi Casper,

I ran into an identical problem, but I couldn't implement your solution. Could you take a look at the post i made?

http://forums.autodesk.com/t5/inventor-general-discussion/extrude-on-projected-3d-sketch/td-p/554971...

Thank you,
Ray