Take your 3" cast padding and start unrolling at the wrist. Go around the wrist once to secure the end and work your way across your hand, ripping the cast padding about half way across so that it goes across the thumb without bunching. Do this twice more, then continue up the arm until two fingers from your arm pit and work your way back to the wrist, cutting off the excess. It is important to overlap by 1/3rd. Now fold the excess stockinette back over the cast padding.
Put on the disposable gloves. Now take a 3" plaster bandage. Once again start at the wrist and make one complete turn to secure the end. As you bring the plaster between the index finger and thumb you let it fold in three ( in the shape of a N or Z) so that it is not right up against the thumb. Bring the plaster across the back of the hand to the wrist. Now repeat this process two more times. Finish the 3" roll by working your way down the rest of the arm. Now open a 6" plaster bandage and continue from where you left off with the 3". Work your way to the end of the stockinette, making sure to leave a 1/4" of stockinette showing. Continue back to just below the thumb, still overlapping by half a bandage width. Now open your 4" bandage and use this to reinforce the elbow.
As the cast starts to set, smooth and mold the cast to the arm.
Now you have the perfect full arm cast.
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