I’ve recently come across a problem that I can’t solve. On one of the objects in the scene I am working on, I enter edit mode to edit the mesh of the object and it appears that every single vertex in the entire mesh is somehow welded in place and I am unable to move it. All the vertices on the other objects can be manipulated just fine. This is only happening with one specific object.
I’m quite sure that this is a useful feature of Blender, activated by a keyboard shortcut that I haven’t learned yet (in fact this happened several times during a university project which brought me damn close to failing the assignment).
So… Can anyone please tell me how to lock/unlock vertices in place, as I seem to have accidentally done???
EDIT: OK this is REALLY wierd. If I switch off the mirror modifier and the subsurf modifier, I can manipulate the vertices just fine. If I switch them back on, the vertices become locked again. I’ve also noticed that my PC slows down a fair amount whenever I switch into edit mode when selecting the affected object - it never used to do that until this problem came along. Can anyone tell me what the hell is happening???
ANOTHER EDIT: I fixed the problem by deleting the mirror and subsurf modifiers, and adding them again. Now the editing is smooth and responsive and I can edit the mesh without problems. So, I no longer have the problem I described… but, as I am always saying in my posts… I don’t know what I did, and if I don’t know what it was that I did then I’m in danger of accidentally doing it again in future… so I would still appreciate it if someone can tell me what went wrong?