So zipper should face towards the middle.
How to make a bench cushion cover with a zipper.
To do this measure how long and wide the cushion is that you are covering.
Then add 1 inch to each of those measurements for the final cutting length and width.
With the zipper foot close to the zipper sew down the length making sure the center of the zipper remains in line with the seam.
Double that number and add 1 inch to get the length of fabric you need for the top and bottom pieces plus the seam.
Change the foot on the sewing machine to the zipper foot.
Your zipper needs to be wrong side up sewn onto the wrong side where the seam allowance shows.
Sew back and forth a couple of times at both ends of the zipper.
Pick a starting point.
For a cushion with a zipper closure cut the boxing strip with the length equal to the measurement of the front and sides of the cushion.
The top piece and the bottom piece with the zipper.
Place your top and bottom pieces together right sides facing in.
To make this invisible zipper cushion cover these steps are adapted from katie of sew katie did.
Their measurements are equal to the measurements of your inner cushion.
Repeat on the other side.
Press all the seams open with your iron at the heat setting appropriate for your fabric.
The elastic will cover up and protect the raw edge so it does not fray as much over time.
Excess length will be cut off during construction.
Making a bench cushion without zippers or velcro can be done in the space of an afternoon or evening.
Place your cushion on a flat surface.
Tape multiple sheets of paper together so you end up with one large piece of paper that is big enough to cover the top of your cushion.
Then align your zipper to the front piece pinning it face down on the good side of the fabric at the bottom edge.
Set your machine to zigzag and set the stitch length to 2 5mm.
Sew these two pieces together all the way around at the edge.
On the underside of the fabric place the elastic over the raw edge of your fabric that you had folded and pressed earlier.
Open your zipper a little so you don t sew it completely shut.
Assemble the items needed.
With straight pins pin your zipper facedown with the teeth right on the seam.
Now it s time to sew the zipper.
You may have to stop and move the pull tab so it s not in the way.
Measure across the top from front to back.
Cut out your fabric pieces.