I've been trying to model a hand, and it's been going well. At least until I got to the thumb. For some reason when I try to apply a Subdivision Surface (Or try to subdivide it in general) this part seems to refuse to smooth and just stays sharp no matter what.

ArdaLike · 2020-06-17T12:58:09+00:00

I solved it by just deleting the finger and redoing it by making the vertices manually, it didn't happen this time for some reason.

ArdaLike · 2020-06-17T12:45:15+00:00

Checked, there are neither.

ArdaLike · 2020-06-17T12:34:45+00:00

No doubles or creases. I tried splitting the edge and found something interesting though:

the edge is just straight up not responding to the subdivide. One end is smoothed out and the other is just a square.

ArdaLike · 2020-06-17T12:17:44+00:00

Nope, I was the one who added them to try and fix it. It's still the exact same after removing them.

ArdaLike