[vinyldude]

hello, working on practice seat, i try ed sewing inserts on seat material, i get this corners wrong every time, to much material around the edge? wrong pattern measurements? ???? thank you for replies.

[DanTwoLakes]

Round corners are one of the hardest things to sew. I'm guessing it has more to do with your pattern. The two pieces you're sewing together need to overlap one another by double your seam allowance all the way around. If your seam allowance is 1/2", the patterns need to overlap each other by 1". If your seam allowance is 3/8", then the pattern has to overlap by 3/4".

The first picture is of the pattern for the front of this seat ('71 Roadrunner) you can see the line I drew on it which is a 1" overlap between the two parts.

The other problem could be your sewing technique. Remember that the machine does all the work, so limit any pulling or pushing of any kind when you sew the parts together.

[vinyldude]

thank you for reply, Yes i did use a 1 inch overlap, So it must be my sewing technique, Will keep on practicing. After TRYING to do some trimming, i can now appreciate your relent and professionalism DAN.

[ol skool spirit]

When you double the seam allowance, 1/2 inch to 1 inch, you sew 1" in? Is the extra material to help the selvage to lay flat?

[DanTwoLakes]

A seam allowance is just that, the amount you sew in from the edge of the fabric. When you sew two pieces together, they both have a seam allowance. If the seam allowance is 1/2", it is 1/2" for both pieces. To account for both seam allowances, your patterns have to overlap one another by 1".

The selvage is the extra part of the roll of fabric on each outside edge which is part of the manufacturing process and is not useable fabric, it has nothing to do with sewing two pieces of fabric together.

[ol skool spirit]

Thank you for correcting my use of the wrong terms. I now understand what you said about the overlap. I misunderstood the original statement, thinking it was to increase the seam allowance.