Stupid Drywall Question
There is a trick for doing drywall corners with a flat blade putty knife.
Put your fiberglass tape on, then apply the setting type mud one side at a time.
Do one side, let it harden up overnight. Then you do the other side the next day so it doesn't dig into the first pass.
If the mud you put on is still soft you can dig it out and try again.
Much easier to put on the mud as smooth as possible, that equals much less sanding at the end.
Usually 2 coats of mud in the corners. 3 coats out on the open butt joint seams.
Good Luck
There is a trick for doing drywall corners with a flat blade putty knife.
Put your fiberglass tape on, then apply the setting type mud one side at a time.
Do one side, let it harden up overnight. Then you do the other side the next day so it doesn't dig into the first pass.
If the mud you put on is still soft you can dig it out and try again.
Much easier to put on the mud as smooth as possible, that equals much less sanding at the end.
Usually 2 coats of mud in the corners. 3 coats out on the open butt joint seams.
Good Luck