Place in a large mixer bowl the flour, salt and shortening. Scraping the bowl constantly, blend at low speed 1 minute.
Add the water. Mix about 10 seconds longer, or until the dough begins to cling to the beaters. Should the dough be too crumbly, incorporate 1 teaspoon to 1 tbsp water with your hands so that the dough forms into a ball.
For baked unfilled shells, whether for individual or big pies, are baked in a preheated 450° oven, unless otherwise noted, 10 to 12 minutes or until lightly browned. Cool them before filling. See individual recipes for a filled shell.