How to Shorten an Invisible Zipper

If zipper length is too long you can to shorten it. Let's learn a way of shortening an invisible zipper when sewing a skirt.
How to insert a zipper in pencil skirt can be viewed here: Tutorial how to make a pencil skirt.
Helpful tips you can find also in others post,
in particular: How to make a waistband with buttonhole.

There are some different types of zippers: regular zippers and invisible zippers, zipper with metal teeth and regular zipper with plastic teeth etc.
Shortening each of them has own features and differences. In one post is impossible to consider all ways, therefore let's learn how to short most popular type of zippers - an invisible zipper that is used when sewing a skirt or dress.
See also: How to shorten a length of metal zipper.
How to mark and cut new length a zipper

Extra length will be removed from top or from bottom parts of tape. In this tutorial we will cut a tape from bottom end.
First you need mark (with pencil for fabric) where you will be cut a tape.
Note: length of a zipper for skirt or dress is measured from top stoppers to bottom stopper.

For cutting an invisible zipper better use big-size scissors which are not used for cutting fabrics.

To fasten this edge you can do on sewing machine. Just make across edge a few stitches. You can sew right on over plastic teeth. But be careful during sewing. May be will better to sew this by hand?
Now you can install an invisible zipper in skirt but there is one problem.
Trimmed edge of nylon tape with plastic teeth of zipper will be irritate your skin or leave tightening on lingerie and nylon stockings.
I offer my own easy way how to solve this problem.
How to hide trimmed tape edge

First, you need to cut such small narrow strip from excess piece of zipper tape.

Trim off one segment 2.5 - 3 cm long from an excess tape.

I'll show you this method in a simplified form when is used a flat strip. An experienced seamstress can fold this strip in half during sewing it to edge of zipper tape.

Place zipper end and narrow strip under presser foot your sewing machine.

Make a few straight stitches across the tape. Don't forget make back stitches using a reverse lever of sewing machine at beginning and end of stitching.

Repeat this step again near first stitch line.

This is final step of shortening an invisible zipper. Trim irregularities of the edge a zipper, if required.

Now you can continue your sewing project and install a zipper!

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