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Lap Hemmer
Tailored effect obtained by having both rows of stitching on the R.S. Can be used to
make Run and Fell seam; useful for nightwear, underwear and children's garments.
Lap hems are used to produce very firm seams. They are obtained in two operations,
viz.:
lat Operation (Fig. 20a): Arrange the fabric sections to be joined on top of each
other in such a manner that the bottom section slightly projects from the top one and
pass with sections touching both under the lap hemmer as when hemming so that they
are folded over. Make sure that the same width of material always enters the lap
hemmer.
XhJ Operation (Fig. 20b):
The two sections are now unfolded and laid flat so that
the seam formed stands up like a pleat. This pleat is again passed into the lap hemmer
in the same direction so that it is folded over and sewn down.
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