Members Nessmuk1 Posted January 28, 2015 Members Report Posted January 28, 2015 Will my Seiko SK-6 sew three layers of 10oz sole leather? Quote
Members Geneva Posted January 28, 2015 Members Report Posted January 28, 2015 The machine is rated at 13mm under the presser foot 14mm with knee lift. You will be at MAX. Try it and see what happens. Quote
Moderator Wizcrafts Posted January 28, 2015 Moderator Report Posted January 28, 2015 Your machine is a newer version of a Singer 132k6, which I once owned. The foot could "lift" 1/2 inch, but hard leather like sole bends will probably grab the needle and lift with it. You will have bent or broken needles and marked up leather The needle clamp may not even be able to hold the needle in and it may have to be fished out with pliers. When I owned a Union Lockstitch machine the manual referred to fair stitching on shoes (soles). It was recommended to oil or wet the leather before sewing. I believe it said to not even try stitching them dry. Also, I ran my (linen) thread through liquid wax/lube (Ceroxylon) that helped it go through tough multiple layers of leather. And that was a needle and awl machine. 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 Singermania Posted January 31, 2015 Members Report Posted January 31, 2015 The boys are correct, the sk-6 is a Singer 132K6 copy, a K6 will only sew 8mm and the Sk-6 maybe a bit more, but I wouldn't push 3 layers of 10 oz at it, I'm assuming 3 layers of 10oz is going to be around 13 - 14mm. You're going to need a heavier machine. Regards Steve Quote
Members Nessmuk1 Posted February 3, 2015 Author Members Report Posted February 3, 2015 It's no big deal. I just wondered how heavy i could go. Will it punch two layers, or is it best to stay away from the sole leather? Quote
Moderator Wizcrafts Posted February 3, 2015 Moderator Report Posted February 3, 2015 Test the machine with some scrap sole leather and #277 thread, using a #25 (200) chisel or diamond point needle. If it can hold your leather down while forming the lockstitches and places the knots well up into the leather, you are probably good to go. But, if the pressure spring can't hold the leather down, you'll get skipped stitches and bent needles. Also, if there are presser foot options, use the widest outside foot you can get. This spreads out the force over a wider swath and tends to hold down tough leather much better than narrow feet can do. 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.
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