How to Make Modeling Clay Harden Faster

Ceramic clay is one variety of modeling clay.

"Modeling clay" refers to different varieties of clay used in making models and sculptures. Certain types of modeling clay harden through air-drying, while others require heat. Some modeling clays, such as oil-based varieties, is not meant to harden at all. If you have modeling clay that does not harden readily, you can take steps to facilitate the process. Most clay comes with instructions on how to harden it best; to avoid problems, follow any available instructions.

Print this article

Oven
Wax paper
Baking sheet
Oven mitts

Instructions

- 1
  
  Preheat your oven to the temperature listed on the modeling clay label. If you do not have a label, heat the oven to 275 degrees Fahrenheit. This relatively low oven temperature is safe for most varieties of modeling clay.
- 2
  
  Check to ensure your model or sculpture is not more than 1/2 inch thick in any area, and smooth out any air bubbles. This step will prevent the clay from coming apart in the oven and ensure that it hardens in all areas.
- 3
  
  Place wax paper on a baking sheet to ensure the modeling clay does not stick. Place the modeling clay on the baking sheet.
- 4
  
  Put on oven mitts, and place the baking sheet into the oven. Leave it in the oven for 30 minutes. Remove the baking sheet, and allow your creation to cool before using it.