Let's face it, binding can be very time consuming especially when you blind stitch the back. Although blind stitching may look better, machine binding is more practical especially for those baby quilts that will be thrown in the wash time and time again. Here's a tutorial on how to do it. :)
First, you need to prepare your binding strips and then sew them onto the back of your quilt using a 1/4" seam allowance. You can learn to do this by referring to Part I of my Binding tutorial, except as aforementioned, be sure to sew the binding strips onto the back of the quilt instead of the front. I suggest using an even feed walking foot when attaching binding. After you're finished with Part I, return to this post to learn how to machine bind instead of blind stitching.
After you've finished Part I, fold your binding over onto the top of your quilt. When you fold it over, make sure you pull it over the 1/4" seam allowance as shown below. Iron the binding so that it lays flat and then pin to keep in place.
When you get to the corners, simply fold the bottom edge of the binding straight up, press flat with an iron and then pin the corners down to keep everything in place.
Lastly, sew a top stitch near the edge of your binding strip. To achieve this, (#1) align the edge of the binding with the middle of your walking foot and then (#2) adjust the needle width so that it's 1-2 millimeters from the edge of your binding (refer to the image below). Once you've adjusted the needle width, all you have to do is concentrate on guiding the edge of the binding strip along the middle of the walking foot.
To stitch around the corners, slow down and remove the corner pin (the green pin) and replace it with the sewing machine's needle to lock it down with a stitch. With the needle down in that corner, lift the walking foot and pivot your quilt 90 degrees, put the walking foot down, and then continue sewing your binding.
Click image to enlarge.
After you're done machine binding, here's how the front and back of your quilt binding will look.The top stitch will be on the front of your quilt, and on your quilt backing there will be a stitch that runs along the binding as shown below.