The open sided sack ready to mark.
Marking out
The sack is divided into segments to give 1/ the gullet space, 2/ the two side bars and
3/ the panels as in the picture below. Before you do this find your centre mark by folding
the sack in two and marking the seam at both sides. Sacks are not particularly exact in their
measurements, so don’t try using the tape measure for this, just do it by eye.
The Gullet 1/ is marked at 40 mm each side of the centre mark, so is 80 mm wide in total.
The bars 2/ are measured at 200 mm from the gullet line down on each side. The panels 3/
are whatever is left, but should be equal, more or less.
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