Quick Answer
Wedging clay before shaping is essential for removing air pockets, preventing cracking, and achieving uniform strength in primitive pottery. However, there are situations where wedging may not be necessary.
Preparing the Clay
Wedging clay is a crucial step in primitive pottery making, especially when using the coil method. This process involves kneading the clay to remove air pockets and achieve uniform moisture content. A general rule of thumb is to knead the clay for 10-15 minutes, or until it becomes pliable and smooth. However, if you’re using a high-quality clay that’s already been processed and refined, you may not need to wedge it extensively.
Working with Different Clays
Not all clays require wedging. For example, if you’re working with a clay that’s specifically designed for pit firing, you may need to adjust your wedging technique or skip it altogether. Pit firing involves exposing the pottery to high temperatures in a pit, which can cause the clay to vitrify and become more dense. In this case, over-wedging can actually lead to a weaker final product.
Applying Waterproofing Coatings
Once your pottery is shaped and dried, you can apply a waterproofing coating to protect it from the elements. One common method is to use a mixture of beeswax and linseed oil, which can be applied using a brush or cloth. This coating can help to prevent water from entering the pottery and reduce the risk of cracking or breaking. When applying the coating, make sure to work in a well-ventilated area and follow the manufacturer’s instructions for application and drying times.
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