This is my custom version of sand clock from https://katamco.com
Carpe diem is a Latin aphorism, usually translated as "pluck the day" or "spend your day trully"
Cover the empty holes with a transparent adhesive tape or thin plastic foil.
You can use sand or table salt to fill back-box. Both salt or sand must be absolutely dry. To be sure, we will also insert and glue the silicate gel inside.
The sift time depends on both the particle size and the size of the hole. On the down left picture is table salt and on the right is synthetic glass ceramic powder. You have to experiment.
At the finish glue cover and back-box together.
Have a fun !
The author marked this model as their own original creation.