Alt+S to thicken the curved portion of the lid is acting differently in 2.90.1 than in video

[clydefrog]

When I do this, the mesh extrudes evenly to either  side of the faces instead  of to inside or outside. Is there a setting or toggle to change this?

[spikeyxxx]

The thing is, you have too much selected!

This is how it should be. Look at the white dots (selected, in your case: orange) and the black dots (unselected):

Now this happens when scaling (as it should):

But you must have Extruded, canceled (which doesn’t cancel the extrusion, only the ‘Move” that would normally follow the Extrude) and then selected ‘everything’ and extruded again:

Look at all the white dots (selected Faces). When Scaling now, this happens:

[clydefrog]

Thanks for the help! I was using L to select all of the faces instead of selectin all.

[spikeyxxx]

That shouldn’t be the issue, you have double vertices in your screenshot ( more than one vertex at the same position), which can be seen by the black dots at the edges; they are the centers of Faces, You should use A, M > Merge by Distance! (I recommend you do this even if things appear to be working correctly now.)

In fact: double vertices (solution : M > Merge by Distance) and flipped Normals (solution SHIFT+N) are together responsible for (a lot) more than 90% of all modelling issues.

[clydefrog]

Thanks again, got it working now 😉

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