Tallbald Report post Posted August 20, 2015 To date I've only sewn up to two thicknesses of 8 ounce. But I've designed and made a laminated sheath for an ulu knife which at the sewn section is a full 5/8 inch of dyed hermann oak. Edge dye is drying overnight and tomorrow I begin sewing. Before beginning on something this thick I will test a scrap piece, and am asking here if I should make any adjustments to my Cowboy 3500 to accommodate the thickness. Thanks. Don. Quote Share this post Link to post Share on other sites
mlapaglia Report post Posted August 20, 2015 Start with a new needle. Quote Share this post Link to post Share on other sites
Tallbald Report post Posted August 20, 2015 Good point (no pun intended). Will make piercing easier with less chance of deflection. Don Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted August 21, 2015 When sewing 5/8" of leather, you will probably need to increase the pressure on the presser foot. Add enough to prevent the leather from lifting with the ascending needle. Use a diamond (Tri) point needle if you have one. Use a stitch length that doesn't perforate the stack of leather. For me, that is usually 5 to the inch in thick leather. Increase the top tension, or reduce the bottom tension, to bring the knots well up inside the leather. Finally, use lubricated thread and sew slowly. Quote Share this post Link to post Share on other sites
Tallbald Report post Posted August 21, 2015 Wiz again thanks. Don Quote Share this post Link to post Share on other sites
