Members Tallbald Posted August 20, 2015 Members Report 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
mlapaglia Posted August 20, 2015 Report Posted August 20, 2015 Start with a new needle. Quote The key to immortality is first living a life worth remembering. Bruce Lee
Members Tallbald Posted August 20, 2015 Author Members Report Posted August 20, 2015 Good point (no pun intended). Will make piercing easier with less chance of deflection. Don Quote
Moderator Wizcrafts Posted August 21, 2015 Moderator Report 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 Posted IMHO, by Wiz My current crop of sewing machines: Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.
Members Tallbald Posted August 21, 2015 Author Members Report Posted August 21, 2015 Wiz again thanks. Don Quote
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