Mara Report post Posted January 9, 2021 Hello i buy old singer model 29k56 long arm i have problem with bad stitch one way stich is ok but if i turn stitch looks horrible... in my opinion problem is with very old needle plate sorry for my english guys :-) send 3 photo for more info https://ibb.co/KD9TCkM https://ibb.co/5rk6cvQ https://ibb.co/NFTfYwL Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted January 9, 2021 I moved this topic from Help Wanted where every reply would have to wait for approval to appear. Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted January 9, 2021 It looks like you may be using a thread too big for the needle size. I can see knots on the bottom. Try a larger size needle. The top tension may be too loose, or the bobbin tension too tight. Also, the stitches are very close together. I would lower the stitch length regulator tab closer to the foot to get longer stitches. Buy some new needles that better match the size of thread you have. Here is a thread/needle chart to help you choose the best match. Your machine uses either System 29x4 or 135x16 leather point needles. They are basically the same needle now, but used to be different long ago. There are non-leather needles for this machine, in case you want to sew cloth or webbing. They are System 29x3 and 135x17. Do not use these on leather if you can avoid it. They will stick after a few stitches and cause a bad looking result. Quote Share this post Link to post Share on other sites
Mara Report post Posted January 9, 2021 thank you for fast answer i use needle from SCHMETZ 332LL 29X4TW DLX4 160/23 and thread size 135 FF stich lenght set to max i buy system 29x3 because i never sewing leather and buy new needle plate... Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted January 10, 2021 10 hours ago, Mara said: stich lenght set to max The maximum (Metric) stitch length for these machines is 5mm, but only into about 3 mm thickness. In order to hide the knots with #135 thread you should have at least 3mm thickness. You can test your machine for wear that shortens the stitch length by raising the foot with the hand lift lever. Lower the stitch length regulator all the way down to the top of the foot and tighten the screw on it. Now push and pull on the foot to see how much it moves forward and backward. Anything more than the slightest wiggle translates into lost maximum stitch length. When this happens you will have a choice of replacing the feed motion cam that moves the foot, or welding/brazing/reshaping the worn out "puck" shaped tab that slides inside the hollowed out ring under the head. I find it simpler to replace the worn parts to regain lost stitch length. Quote Share this post Link to post Share on other sites
