Heat the oven to 375°F and set out ungreased, unlined metal baking sheets. Beat butter and sugar for 2 minutes until smooth and light.
Beat in egg, vanilla and almond extract. Mix in flour and salt just until the dough is smooth and soft.
Load a cookie press with a simple flower disc. Press about 48 small cookies onto cool bare sheets, leaving 1 inch between them, and sprinkle with the measured sanding sugar.
Bake in three batches for 7 to 8 minutes each, until the bottoms are very lightly golden and the ridges look set. Cool the empty sheets fully before pressing another batch.
Let the cookies stand on the sheets for 2 minutes, then lift gently with a thin spatula and cool on racks.