This thing replaces the standard Schlage privacy Plymouth style knob
(and probably others.) If you are a cat crazy person (like some of the
people in my house) then follow these instructions to update your
Printed with a raft. To remove the standard Schlage knob drill a hole in
the top dimple (see picture) then punch out the swage on the opposite
side. The old knob will slide off, just slide your print into place. Mine
was tight so I just left it snug, if yours is loose you can add a screw
where the swage was to keep the knob in position.