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I've been thinking about handbuilding some new teapot forms for my summer shows. I like to apply patterns to my clay while it's flat and helpless... much easier than individually incising whole pots. I also think that teapot users like the funky, vaguely irregular bodies of handbuilt teapots. And of course, I really like to make them - the only real reason to do anything.
I had thrown forms related to this quite a few times and knew the scale and proportion that I wanted to achieve.
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First, the clay has to be conditioned to be at the correct stage of dryness for cutting, decorating, and building. I undress the block of clay the night before, and leave it out for 4 or 5 hours, depending on whether or not I have a fire in the studio. In summer, it takes much less time. I just want to be sure that the clay is stiff enough that it won't collapse when I start assembling my forms. It's also much easier to do the stamping, rolling, and other surface decoration when the clay is a bit firm.
The next morning, I cut the block of clay into 3 or 4 slices so it can dry further, and will be easier to put through the slab roller. I use Slab Mat paper so I don't have to remove any canvas texture from my work. If you don't have a big block cutter like the one in the image, there are still lots of ways to cut nice slabs. If they are going to go through a slab roller eventually, it doesn't even really matter.
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Using a drafting compass, I create conic patterns for my teapot. I am using stiff sheet PVC for my patterns - permanent and durable for studio use. On the pattern pieces, I will record the name of the piece, how many pieces there are, and assign a number to each piece. That really helps for storage and retrieval. I have more than 100 different patterns floating around my studio. I do try to keep each one in a labelled zip lock bag.
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Here's a little mock-up of what the form will be. This step is an essential part of pattern making - it will allow me to assess the scale and proportion before whacking into the clay. As you can see from the picture, I have already reduced the diameter of the finished piece a bit to conform to my internal vision of the teapot.
Pattern making in the clay studio is a skill that can be learned. I got a major head start on the process through decades of sewing practice, where I made most of my own clothing patterns. Any craft that requires estimation and visualization will help with pottery making....
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Here are the finished body patterns, ready to cut. The clay is about 1/2 centimeter, or 3/16" thick.
In my next post, I'll decorate these two components, and assemble the body of the teapot. There's a previous post that goes into considerable detail around building a spout with a mandrell, so I won't revisit that step.