amateursewing Report post Posted May 19, 2016 I am using a size 16 leather needle and a size 35 high quality German polysterster leather thead for alterng bikers leathers, on my Pfaff 34 on thicknesses of over 3 the thread in the needs seems to ravel up insteadof locking the underthread and making a good stitch. Then I do the same work on my Signer 20 electric machine and it mahince NEVER loops the needle thread, in fact it only gently has to be handwheeled over the 3-4 think seams and then sews beautfilly. What is going on here? I supsoect it is somehing to do with the Pfaff 34 treadle, but this WAS a saddles machie. Laurecne Quote Share this post Link to post Share on other sites
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