3. 3 thread overlock, has 1 needle
thread and 2 looper threads.
Has excellent extention and does
not unravel easily.
Used for serging to stop fabric
fraying, and for joining 2 or more
plies together.
However this is not a tight stitch
and seam security could be a
problem.
Bulky seams
TIPO DE PUNTADA 504
6. Mock safety stitch, has 2 needle and
2 looper threads
Very good extention, will not unravel
easy.
Side seams, join panels, attach
sleeves, join shoulders etc. on knitted
fabrics, tee shirts, polos.
Side seams, join panels, etc. on
swimwear and on aerobic wear, cycle
pants etc.
Where there is a need for a secure
seam that needs very good
extension.
512 is more secure than 504 (3
thread overlock) but less secure than
516 (5 thread safety stitch)
Stitch Type 512
11. 5 thread safetystitch, has 2 needle
threads and 3 looper threads. A
combination stitch
Has two stitch types in one, 504 and
401. Good extention, very strong. If one
fails the other can absorb the strain
Used for
joining panels where seam stretch is
critical
or joining seams where security of
seam is important. Jeans (inside legs)
side seams and sleeves on shirts,
overalls etc.
High seam elasticity
Stitch Type 516