Jimbob Report post Posted November 19, 2011 Got my trusty Singer 211-155 to help me make another backpack, nice 2-layers of 3-4 oz leather plus liner plus french rolled leather seams....well, gotten a bit heavy in thickness....but the Singer foot lift was still enough to get it under the pressure feet....I had no problem sewing....got a servo motor from Toledo Bob!!......But I noticed that some of my stitches on corners or on real thick layers gotten very small.....so I adjusted stitch lengh and when doing thinner stuff, suddenly I had huge stitches... Did I overdo the thickness of the material? Maybe I went to far for the old Singer....should I be able to release pressure from the foot to give more feed movement? Or is the old Singer just wore out? Tension was fine, knots where inside material and stitches very tight....Wonder if anybody has any idea about this matter.... As always, thanks up front for any help!! Greetings Jimbob Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted November 19, 2011 @JimBob; Could be the old gal is worn out from too many stitches. Lift the presser feet and try moving them forward/backward. If there is appreciable motion it will cause reduced stitch length on thick material. If the presser bars are not loose, try reducing the pressure on the top spring (or springs if your machine has two). Eventually, you'll reach a point where you cannot reduce the pressure any further without causing the material to lift with the needle (skipped stitches). A tight bobbin spring will drag the material backwards, especially around corners. Back off the bobbin spring, then the top spring, to balance the position of the knots. If that machine is belt driven check the belt for excessive slack. Finally, check the feed dog for slop and raise it slightly. Quote Share this post Link to post Share on other sites
