You absolutely need an industrial machine to sew your top together. A home machine would really struggle, more with the thickness of the fabric and being able to pull the material through the machine than with the actual sewing. Why would you not want a pre-made top? There is a lot more to a convertible top than just being able to sew the 4 pieces together.
Anyway, there are two ways to sew the top together. One way is to sew the pieces together and top stitch the seams afterward. The other way is to sew the pieces together and glue down the seam allowance underneath instead of sewing it down. This will give you a nicer, cleaner look and eliminate a stitch line and the needle holes.
No one lives forever, the trick is creating something that will.
Last edited by DanTwoLakes; 08-13-2008 at 06:57 AM.