This presentation uses a half-section pipe as a mold. Screws through the crown are necessary to hold the half-pipe straight and in position at the edge of the work surface. Use a bevel tool to position the screw closer to the pipe surface. The blue plastic is for contrast so the white pipe is visible in the photo.
Rain gutter length is 116 inches, almost three Meters (2.96). Diameter is 3" = 7.62 centimeters
Two strips of burlap were soaked in water for about ten minutes and then hung on the line to drain excess water. The strips were measured to make the water canal and extend up and then onto the roof for attachment. The wider strip in front is about 15 inches and the narrow one is about 12 inches (38 and 30 centimeters). Hanging threads were cut from the cloth while excess water was drying.
The damp burlap was positioned on the half pipe mold and held in place with a clamp at each end. Loose threads were trimmed again. This work is being done at my home rather than the work area. My work area recently changed ownership and the new owner no longer supplies water. The rain gutter has become the actual source of water for ferrocement.com by necessity.
A board wrapped in plastic is clamped to the work table to hold the fabric in place and protect the portion that will be used for attachment to the roof. This board could be positioned a little lower to creat part of the riser to the roof, experience will develop this preference.
Cut additional threads and irregular fabric that extends too far and encounters the work surface. Wrinkles are quickly smoothed with both hands, start at the center and work toward the ends.
Let the second layer of fabric hang downward after it is smooth.