The fact that it sewed one layer of vinyl perfectly and not 2, suggested to me that the bottom layer of fabric was not moving at the same pace as the top layer, so, I ordered a Teflon foot for my machine along with a walking foot. In addition, I ordered some leather needles, as the vinyl I am sewing is quite similar to leather in terms of weight and texture.
|Walking Dog Foot & White Teflon Foot|
The purpose of the Teflon foot is to allow the fabric to slide along the foot without sticking. I tested it out when it arrived and whilst it did work on scraps, I worried about how it would cope with large panels of the vinyl as they are going to create far more drag and resistance to the machine.
The walking foot is a really interesting attachment for a sewing machine. Basically, the foot has its own feed dog, which moves the top layer of fabric you are sewing along at the same pace that the bottom layer of fabric moves at. When you connect the foot to the machine, you position the walking foot lever over the screw to tighten the needle. This allows the feed dog of the foot to move at the same pace as the feed dog on the sewing machine.
I tested the foot on a scrap and felt that the walking foot in combination with the leather needle is definitely the best way to sew the vinyl headlining. I found the largest Leather needle (size 100) to be the most appropriate for the weight of vinyl being sewed.
The Real Sewing Begins
|Sewing curves on vinyl|