Introduction Using your sewing machine for hemming can make the process both fast and professional looking in terms of the finish.
Ideally, you will want your hem to be as inconspicuous as possible and if the garment you are hemming is made from a sheer material, it is even more important to make your hem as close to invisible as possible.
In short, this means making a blind hem where tiny catching stitches will be used to secure the hem.
Most sewing machines have a 'blind hemming foot' for this purpose.
List of Things You Will Need To achieve the best results, you will need to have your requirements organized prior to starting on the hem and the minimum requirements are listed below for you:

• Sewing machine
• Hemming foot - preferably a blind hemming foot
• Cotton thread - fine quality thread if you are working with a sheer fabric
• Pre-loaded bobbin with the same color cotton
• Pins for initially securing the hem
• Tape measure to ensure stitch is uniformly made around the bottom of your garment
• Scissors

Preparing the Hem This is the most important part of the process because unless your hem is properly prepared, the results can be less than stellar.
You will need to determine the position of the hem and in the case of hemming pants you should choose a length which equates to the bottom of the heel of the shoe or boot which will be worn with the pants.
When the correct position is determined, run a line of pins around the lower edge of the garment, leaving approximately 1 1/4 inches of fabric with which to create the hem.
Try the garment to see if the hem is positioned correctly all the way around and re-position the pins if necessary.
Turn the hem under using ¼ inch and make sure the finished hem is 1 inch wide.
You can trim away excess fabric once you are sure the hem is correctly positioned.
Place the pins perpendicular to the line of the hem so that the sewing machine can easily run over them when you begin stitching.
It's always a good idea to press the hem into place so that it holds its line perfectly and it also makes it easier to sew.
Regardless of what you are hemming, this is the preparation which will provide the best finish.
Using the Sewing Machine Finally you are ready to actually use the sewing machine to stitch the hem.
Make sure you have matching cotton in the machine and bobbin, have the blind hemming foot attached to the sewing machine, place the hem finished side down under the needle and secure your seam with a couple of starting stitches.
Then carefully follow the line of the hem all around the bottom of the item, using the guidelines on the needle plate to ensure perfectly straight stitching.
Secure the finished hem with a couple more stitches and snip both sewing threads.
Remove the pins and press the hem again.
You should have a perfect blind hem if you have prepared correctly.