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One good way to make a 3D model of the digestive system is to use modeling clay. You can buy some at the store or find a recipe to make your own. Once you have the clay, use a good picture of the digestive system and mold the individual parts. You can secure them together with toothpicks.
chickiemomma1961     How-To Expert
Then again, this answer might help you...
To make a 3D model of the digestive system, start by drawing a human outline on foam board. You can use clay for some parts, then hit the hardware store. Flexible pipes are available at large home improvement stores and make great intestines. For more information look here: Digestive System ;
kasmello     How-To Expert
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