What kind of sewing machines are needed to make a "teardrop" backpack with leather bottom and patches?
As I know,
1. Singer 111W single needle walking foot,but don't know which type is perfect for the stitch.
2. Singer 68 class tacking machine which can do a box with X on it.
But how big the box should be?
Is cylinder sewing machine needed? Is any other machines needed?
What is the making process?
Lot of questions of making a backpack. Anyone knows about it?