Interlock machine and Overlock sewing machine


Dreamer, in today’s post, we will tell you about the differences, seams, and applications of the interlock machine and Overlock sewing machine.

We hope this post will help you so much.

The invention of the sewing machine gave rise to various types of machines that perform more complex and reinforced stitches than straight stitches.

The overlock machine and the interlock machine have become some of the most common.

In the following images, let's learn a little more about its use and operation.​

Overlock sewing machine

This type of machine performs the sewing employing needles and hooks located at the bottom.

While sewing, the blades found in the front part cut the excess fabric from the seam allowance.


The 2 or 3 threaded ones are used to finish the overcasting for edge protection, very useful for fabrics that fray efficiently.

  • The seam allowance is 1/8” or 3-4mm.

Overlock machines with safety stitch or 5-thread stitch, do overlock stitching, adding a straight stitch on the left side to reinforce the seams.

  • The seam allowance is 5/16” or 7mm.

Interlock machine

Also known as an overlocker or multi-needle machine is used to make chain stitches in knitted and delicate fabrics.

  • A cover stitch is a machine that can use 1, 2 or 3 needles.

Its primary function is to give a view to the garment after assembling with an overlock or straight machine

Making the backstitch and is used to put decorative seams to the garments and place spring in pants, shorts or underwear.

  • The width stitches with 2 needles is 2 or 6 mm. For stitches with 3 needles 6 mm.

What did you think of this information? Let us know if you already have any of these fantastic machines in your workshop.

We invite you to check out our All about sewing, where you will find complete sewing machine information.

Click on the link to know more content like this and inspire you to create and apply it in your following sewing projects.

See you in another post! Bye for now!

Published by 123 Dream it!

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