An hourglass with falling sand

A study of a wooden hourglass with glass bulbs, sand, and three supports on textured paper. Align the upper and lower elliptical plates on a vertical axis.

A way into the drawing

1. Establish the main forms

   Align the upper and lower elliptical plates on a vertical axis.

2. Build the structure

   Connect the rods and fit the two curved glass bulbs between them.

3. Develop selected details

   Shape the lower sand pile, add the falling stream and reserve pale glass highlights.

A small thing to tryKeep the glass waist aligned with the center of the lower sand pile.