Brother International SB3734T Operation Manual - Page 11

Differential feed, Adjusting the presser foot pressure

Get Brother International SB3734T PDF manuals and user guides View all Brother International SB3734T manuals
Add to My Manuals
Save this manual to your list of manuals

Page 11 highlights

English Differential feed This serger is equipped with two sets of feed dogs under the presser foot to move the fabric through the machine. The differential feed controls the movement of both the front and the rear feed dogs. When set at 1, the feed dogs are moving at the same speed (ratio of 1). When the differential feed ratio is set at less than 1, the front feed dogs move slower than the rear feed dogs, stretching the fabric as it is sewn. This is effective on lightweight fabric that may pucker. When the differential feed ratio is set at greater than 1, the front feed dogs move faster than the rear feed dogs, gathering the fabric as it is sewn. This function assists in removing the rippling when serging stretch fabrics. Differential feed adjustment Feed ratio Main feed (rear) 0.7 - 1.0 1.0 1.0 - 2.0 Differential Effect Application feed (front) Material is Prevents thin pulled tight. materials from puckering Without Normal differential sewing feed. Material is Prevents gathered stretch or pushed materials together. from stretching or puckering The normal setting is 1.0 on the differential feed adjustment dial. To adjust the diffrerential feed, turn the dial on the right bottom of the body. 1 2 1 Less than 1.0 2 Greater than 1.0 Selection mark An example When stretch material is sewn without using the differential feed, the edge will be wavy. To get smooth finish, adjust the feed ratio from 1.0 toward 2.0. (The feed ratio required depends on the elasticity of the material.) The more elastic the material, the further toward 2.0 the differential feed ratio should be set. Test sew with a scrap of the fabric to find the correct adjustment. CAUTION When sewing thick non-stretchable material such as denim, do not use the differential feed as it may damage the fabric. Adjusting the presser foot pressure Turn the pressure adjustment screw on the top left of the machine. You can adjust by referring the value on the screw. The normal setting is "2". 1 2 1 Less pressure 2 More pressure Selection mark 9

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
9
English
Differential feed
This serger is equipped with two sets of feed dogs
under the presser foot to move the fabric through
the machine. The differential feed controls the
movement of both the front and the rear feed dogs.
When set at 1, the feed dogs are moving at the
same speed (ratio of 1). When the differential feed
ratio is set at less than 1, the front feed dogs move
slower than the rear feed dogs, stretching the
fabric as it is sewn. This is effective on lightweight
fabric that may pucker. When the differential feed
ratio is set at greater than 1, the front feed dogs
move faster than the rear feed dogs, gathering
the fabric as it is sewn. This function assists in
removing the rippling when serging stretch fabrics.
Differential feed adjustment
Feed
ratio
Main
feed
(rear)
Differential
feed (front)
Effect
Application
0.7 - 1.0
Material is
pulled tight.
Prevents thin
materials
from
puckering
1.0
Without
differential
feed.
Normal
sewing
1.0 - 2.0
Material is
gathered
or pushed
together.
Prevents
stretch
materials
from
stretching or
puckering
The normal setting is 1.0 on the differential feed
adjustment dial.
To adjust the diffrerential feed, turn the dial on the
right bottom of the body.
1
2
<A>
1
Less than 1.0
2
Greater than 1.0
<A> Selection mark
An example
When stretch material is sewn without using the
differential feed, the edge will be wavy.
To get smooth finish, adjust the feed ratio from 1.0
toward 2.0.
(The feed ratio required depends on the elasticity
of the material.)
The more elastic the material, the further toward
2.0 the differential feed ratio should be set. Test
sew with a scrap of the fabric to find the correct
adjustment.
CAUTION
When sewing thick non-stretchable material such
as denim, do not use the differential feed as it may
damage the fabric.
Adjusting the presser foot pressure
Turn the pressure adjustment screw on the top
left of the machine. You can adjust by referring the
value on the screw.
The normal setting is "2".
1
2
<A>
1
Less pressure
2
More pressure
<A> Selection mark