On this week we are moving forward to a more complicated shape -- a torus.
Material Preparation: Aluminum Sheet. Steel rule & marker.
Step 1: Draw the guideline on the sheet, divide the sheet into 3 equal areas with a margin around the border.

Step 2: roll the primary curve with the stump to get the initial shape.

Step 2: Use melee to hammer down as many times as possible on the central area to get the second curve along the primary curve.

Step 3: To get reverse curves on both edges, use a planishing dolly with a planishing hammer to hammer the edge which follows the curve of dolly.

Step 4: Repeat Step 2 & Step 3 to achieve curves with more radius.


Step 5(Optional):after serval times repeating hammering between stump and dolly, the surface becomes quite lumpy, so I tried to use English Wheel again to smoothen the surface of the curve. However, I found out the Wheel would flatten the primary curve as I smoothen the surface, so I decide not to do so in order to keep the shape.


Finish Product:


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