1. Hold Lid in one hand while firmly pulling on the shaft of the mixer paddle to detach mixer paddle from the Lid.
2. Insert the shaft into the center hole from underside of Lid and push until mixer paddle is seated and "SNAPS" into place.
3. Place assembled Lid/Stir onto your paint can and tap into place. If using a hammer, tap anywhere on the Lid or on the stacking tower bumps(4) on top of Lid.