How do you prepare Acrylic special tray for edentulous mouth?

To prepare an acrylic special tray for an edentulous mouth, first, take an impression of the patient's oral cavity using a suitable impression material to capture the anatomy. Once the impression is set, pour a dental stone to create a model of the edentulous arch. After the model is complete, cover it with a separating medium, then heat and form the acrylic resin over the model to create the tray. Finally, trim and smooth the edges of the tray for patient comfort before using it for further impressions or procedures.