Step 1: Drawing down several vertical lines as shown below, these lines are drawn to prevent malformation when hammering.
Step 2: Use the timber mould as shown below to bend the aluminum strip round. Make sure that the vertical lines are parallel to the vertical concave shape.

Step 4: As shown below, it is supposed to move the bended aluminum while hammering it so that the concave surface can be shaped starting from the top of the strip to the bottom of the strip. Make sure the bended strip is moved vertically not horizontally so that the strip will be regular shape not abnormal.

Step 5: The metal horse shoe as shown in image H is used to make the edge of the torus. The red mallet in image K is used to hit the aluminum strip because the flat surface of the red mallet can make the edge perfectly fit the metal horse shoe. Note that it is supposed to make the edge by mallet
starting from the inner space of the torus to the outer side to make a regular shape.
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| image H |
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| Image J |
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| Image K |
Finally!!!!!!!!























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