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The one on the left weighs 176 grams. The right one is thrown and weighs 376 grams. When making pieces this light there is a danger that the weight of the handle will pull the lip oval. To counteract this, the body needs to vitrify well for sufficient durability and strength (but not so much that warping occurs).
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These four sections were glued together to make a larger one. The plastic wrap (top left) rounds the corners. This method makes it possible to quickly precision-cut the shape for making many pie-crust mugs at a time. Later, I reprinted these templates on a better 3D printer so the vertex holes (top right) cut larger and are better formed (these holes are important, they enable the folds to overlap naturally at the corners). For thin-walled pieces like this, it is necessary to use a highly plastic clay so that when the board is flipped, the four sides fall downward against the mold without ripping (I have a tissue under each to assure that none will stick to the board during flipping). The overlaps are simply glued with slip (no scoring is needed). As soon as possible, each piece is turned over to ensure even drying. These almost never crack no matter how fast they are dried. Incredibly thin-walled pieces can be made.
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