On Sunday, 24 November 2013 16:53:25 UTC, Leon wrote:

That is a dedicated sewing machine that is know as a Long Arm Sewing
Machine. It's sole purpose is to attach the top, inner padded layer,
and bottom parts of a quilt together.

The three sections of the quilt pieces are rolled up on to the front two
poles then through the needle and foot of the machine then behind and up
the back bottom pole and would up on the back upper take up pole.

The machine rolls back and forth on the tracks, 11' wide, and it moves
forward approximately 12~14". With this X,Y movement the operator can
sew a freehand or laser guided pattern through all layers of the quilt
left to right or right to left 12~14 deep at a time. Once a pass is
made the sewn portion of the quilt is roll up on the upper back take up
real and a new row of sewing begins.


Thanks for the explanation Leon, much appreciated. I'd wondered how they
do that sort of thing!