For those new to quilting it is really important to learn how to sew the perfect 1/4 inch seam. This can be done with the help of special tools, although accuracy is part technique and that takes a little practice!
Hows to sew the perfect 1/4 inch:
Definition
Lets start by defining some of the commonly used terms;
1/4 ” seam= This is the distance between the raw fabric edge and the stitching line
A scant 1/4″ = A thread or two less than a 1/4 inch to accommodate the thread of the stitching line and the fabric, which take up space in the seam.
Tools
1/4″ foot
For most domestic sewing machines you can purchase a 1/4″ foot specific to the make and model of your machine, which has a guide bar attached to the foot. This helps guide the fabric as it passes through the machine.
Painters Tape
If you don’t have 1/4 inch foot you can make your own guide using painters/masking tape.
Cut 7 or 8 pieces of tape about 4-5 inches in length, then stack them on top of each other to form a thickness of about 2mm.
Stick the stack of tape along the 1/4″ mark shown on your sewing machine. When you run the fabric through the machine it will butt up against the tape allowing you to sew a consistent straight line.
Checking your precise 1/4″
Now you have your guide it is important to ensure that your machine is sewing an exact 1/4″ There are a couple of ways to check this,
Ruler
Place a ruler on your machine plate lining up the edge with your guide and slowly lower the needle until it touches the 1/4″ mark. If it doesn’t you will need to adjust your needle to the right. This can be done on most modern computerised domestic machines.
Index Card
Most standard index cards or graph paper have 1/4 ” lines (check by measuring fist!). Align one of the lines with your 1/4″ guide, then sew.
If you are lucky the stitch line should sew along the adjacent line. If not, adjust your needle position.
Fabric strips
Cut x3 1.5″ strips of fabric about 6 “long Sew them together along the long edges and press.
Check your first 1/4 ” seam with a ruler.
When you have sewn all the strips together measure the width of the centre strip. It should measure exactly 1 “
I hope these tips help you sew a perfect 1/4 inch seam. Accuracy makes all the difference so its worth getting it right from the outset.
So now you know how to sew the perfect 1/4 inch seam. Next time we will look at how to press your fabric to ensure those perfect seams stay that way!
Happy sewing!
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