ashleyuk Report post Posted July 7, 2016 Hi I am looking for some advice from those of you sewing heavy leathers, holsters etc. I have a machine using the 794 needle system. We sew veg tan on it, 2 layers of 3.5 mm most of the time, but sometimes more. I prefer the LR point needle and the stitch it leaves but I have a problem with that needle ( and any of the points, S or D ) with it cutting thread when it comes into contact with the start stitch that you go over to finish. It will sometimes shred a little thread on the back stitch also, but not always. I understand this is the nature of a cutting point needle, but I am looking for any tips to try and prevent this. I know I could finish my stitches by hand but this doesn't address the issue of needles cutting thread. We have tried alot of thread and needle size combinations and the smaller needles do it the least but the issue is still there every now and then . This thread is 10's B nylon made by Coats. I have even tried standard point needles and they obviously eliminate the cutting issue, BUT the back side is not pretty and it throws the tension around a little with it not being a leather needle The machine is regularly serviced and had its last service about a month ago, timing is perfect . Its just those needles ! Thanks for any advice in advance! Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted July 7, 2016 When I have problems like that I turn the work around and sew over the stitches moving forward, rather than reverse. I also place the needle on the side of the original stitches, rather than head on. Diamond/triangle point needles are less likely to cut the previous thread. Quote Share this post Link to post Share on other sites
Uwe Report post Posted July 8, 2016 The leather type knife-edged needles will generally cut thread or fabric just as well as leather. I'd just finish the seam off by hand. You have to do something by hand anyway to pull the top thread ends to the bottom and secure them. It probably takes less time to finish the seam by hand, than to redo the entire stitch line because it cut a previously stitched thread every so often. Then you can claim "hand finished seams" and charge more money . Quote Share this post Link to post Share on other sites
ashleyuk Report post Posted July 8, 2016 Thanks for your replies Wiz and Uwe I will give the D points another go and drop down the side a touch to see how much success I have with that. If that doesn't bring me much joy then its the option you suggest Uwe ! Nice videos by the way Uwe ! Ashley Quote Share this post Link to post Share on other sites
shoepatcher Report post Posted July 11, 2016 Check the eye of the needle for sharpness. Once in a while, needles do come with a sharpness on one of the edges sharper than it should be. I have buffed a few of the eyes in my day. I had one of my operators have problems with a pack of 134-35 titanium G-B needles in size #23, round point last week. Turns out all the eyes were sharp and fraying or breaking thread. Tried another pack and no problems. It does happen. glenn Quote Share this post Link to post Share on other sites
