Extrude simple sketch profile without fusion autoselecting profiles.

[jonathannbreen]

This has bothered me for some time. Perhaps my extrusion methodology is the problem.

Say I create a sketch on a part face, sketch a profile, and then want to extrude that profile. Fusion tries to autoselect or "suggest" profiles to extrude. If I want to extrude the profile I just sketched, I sometimes have to make many different selections if the profile is broken up by profiles belonging to the face the sketch was created on. I turned off "Allow 3D sketching...", "autoproject edges on reference", and "auto project geometry on active..." in Preferences>Design. Hiding all bodies does not help.

I have noticed that creating a construction plane first then sketching on that does solve the issue. But I was hoping there's a simpler solution.

The attached screenshots should help describe the issue.

Created sketch of square on the top face of this part.

Sketch:

When attempting to extrude:

I want to extrude only the square I sketched without having to select all the suggested profiles.

Also, I realize that doing a window select would work in this case, but would not work in all cases and doesn't seem robust.

Thanks in advance.

[davebYYPCU]

2 sketches, square in 1st one, Fusion will see just one profile.

details in a second hidden sketch.

Might help....

[jeff_strater · Accepted solution]

This preference should control whether face geometry is automatically projected into the sketch:

Can you check that this is off, and you still get those projected edges?  Note that this will only affect new sketches, not existing ones.

If you want this geometry, but not to be involved in profiles, after creating the sketch, window select all the projected (hidden) geometry, and convert them to construction curves.

[jonathannbreen]

I unchecked that before posting, found that it didn’t help. After restarting I found that it worked. Thank you