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Creating Symmetrical Shapes Board

Start by cutting a piece of chipboard (available at most upholstery shops) that's the appropriate size for the shape that you'll need. Before you start sketching out your shape, you should create "crosshairs" by drawing center lines for both the vertical and horizontal dimensions.
Creating Symmetrical Shapes

 Start by cutting a piece of chipboard (available at most upholstery shops) that's the appropriate size for the shape that you'll need. Before you start sketching out your shape, you should create "crosshairs" by drawing center lines for both the vertical and horizontal dimensions.  View Related Article