How to make cracked marbles

Make Cracked Marbles

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Begin by pre-heating your oven to 350 degrees.

Begin by pre-heating your oven to 350 degrees.

Have your marbles nearby in a container or bowl, or in a yellow Augustana frisbee in my case.

Have your marbles nearby in a container or bowl, or in a yellow Augustana frisbee in my case.

With the marble pack I purchased, some of them had a matte paint covering (shown on the top). DO NOT USE THESE, OR ANY MARBLES WITH COATING ON THEM! The paint or gloss will burn in the oven.

With the marble pack I purchased, some of them had a matte paint covering (shown on the top). DO NOT USE THESE, OR ANY MARBLES WITH COATING ON THEM! The paint or gloss will burn in the oven.

Lay a sheet of foil over the tray and place each gem in a single layer along the tray. Try to have the marbles avoid touching the sides of the tray or each other (to prevent melting).

Lay a sheet of foil over the tray and place each gem in a single layer along the tray. Try to have the marbles avoid touching the sides of the tray or each other (to prevent melting).

Set a timer for 20 minutes.

Set a timer for 20 minutes.

  • 50.0 Marbles
  • 1.0 Baking Sheet
  • 1.0 Sheet of Aluminum Foil
  • 1.0 Bowl of Ice Water
  • 1.0 Slotted Spoon
  • 1.0 Towel
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