I'm working on a couple projects and needing to hand sew what I consider extremely thick leather. Project one is about 1/2" total and project 2 is about 3/4" total... 3 and 4mm diamond chisels but the prongs on those wont go all the way through, I've got a basic awl but not a diamond one. I'd like to know what everyone recommends as far as 1.creating the stitching holes 2. What type and thickness thread should I be using? The stitches are more visual than structural but still need to be able to