3 cups all-purpose flour, plus more for surface and cutter
1 cup cake flour (not self-rising)
1 tablespoon baking powder
1 teaspoon baking soda
1 1/4 teaspoons salt
2 tablespoons plus 1 teaspoon granulated sugar
1 stick (1/2 cup) cold unsalted butter, cut into small pieces, plus 2 tablespoons melted butter for brushing
1/2 cup vegetable shortening,cut into small pieces and chilled
1 1/2 cups buttermilk