It is not possible for the wax pattern of most large-volume maxillary resec
tion obturators to be placed into a flask for conventional compression mold
ing processing and positioning of the wax pattern. However, these wax patte
rns and their channel access design often can be modified and aligned in po
sition for processing with the continuous pressure injection technique. Thi
s article describes the use of the continuous pressure injection technique
to process the perpendicularly aligned wax pattern of a maxillary resection
obturator. It also describes a modified channel design and a simple method
to pull back the injection funnel to increase the volume of the flask.