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Plaster Mosaic Clock
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Plaster Mosaic Clock

A shimmering mosaic disc that grows into a real working clock — a keepsake made from tiny colorful tiles.

Ages 4-630 min plus overnight drying prep

What you'll need

  • Plaster of Paris powder and water (adult mixing)
  • A shallow round mold (a plastic yogurt lid or a silicone cake pan)
  • Colorful mosaic tile pieces or broken ceramic in pastel shades
  • A pencil or chopstick to poke the center hole
  • A basic clock movement kit with hands (from a craft store)
  • White craft glue and a small brush
  • Optional: a ribbon loop for hanging

How to make it

  1. 1

    Adult only: mix plaster with water to a pancake-batter consistency. Pour into the mold about 2 cm thick.

  2. 2

    While it's still soft, let your child gently press mosaic tiles into the surface, leaving the exact center clear.

  3. 3

    Push a pencil through the center to make a small hole for the clock stem, then wiggle it out.

  4. 4

    Let the plaster set undisturbed for 24 hours until it's completely dry and cool.

  5. 5

    Pop the disc out of the mold. If any tiles are loose, dab a little glue underneath and press back in.

  6. 6

    Adult only: push the clock stem through the center hole from the back. Screw the nut on the front, then attach the hour, minute, and second hands.

  7. 7

    Add a battery, spin the hands to a fun time, and hang it up in your child's room.

Tip

Talk about the numbers 12, 3, 6, 9 as you place the four tiles at those spots — a lovely first introduction to reading a clock.