Wizard Ball Plug will begin to harden in 15 to 20 minutes. Wizard Ball Plug can be cut, drilled, beveled and sanded in one hour. To plug thumb and fingers, pour fingers first. Wait approximately 15 to 20 minutes, then turn ball up and pour thumb. One hour later, cut down fingers, then thumb.
Some chemicals tend to separate when left standing for periods of time.
Improve performance by shaking before use.