Sunnyside Scott Report post Posted August 17, 2013 My primary work is not leather, I work with Corduras and nylon webbing as well as some tarp repair to help support my sewing habit. I have had a twin needle machine (juki 1182 LH with size U bobbins) for about a year and use it off and on for gear but my primary use is for tarp work. My trouble has always been with the left needle and the top thread wanting to become untwisted while running long stitch runs, which causes occasional skipped stitches. I use bonded nylon and polyester threads. Through some research I learned about right twist thread, so with a large tarp job at hand I special ordered it through my supplier, although I did have to buy 10lbs, ( #135 bonded Polyester, which is a few years worth of thread for me). I had a chance to run some tests today and it is the answer to my "untwisting" thread problem, on the left needle. Now I just need to find out about buying a few spools in my standard Military colors. I am interested in hearing from you builders that are running twin needle machines. Thanks, Scott Quote Share this post Link to post Share on other sites
brmax Report post Posted August 18, 2013 Scott im glad you ask i have now an older singer double 212 and have read about your situation, so Im definitly following this. I would like to ask as im new to this game, is the 135 thread the ticket for tarp canvas out door projects. And what needle is working for ya 135x17 system here but tip and eyelet i havent a clue. good luck and just be listening here Thanks Quote Share this post Link to post Share on other sites
Sunnyside Scott Report post Posted August 18, 2013 Brmax, I am not an expert on sewing tarps, I am just finding things that work for me. To be more clear on what I am sewing, it is 18oz vinyl coated polyester ( truck tarp) I am making fitted covers for plastic storage crates that get strapped to a flat bed trailer and go down the road on a daily basis. I got the job because the last person making these covers was using a #207 thread with a single stitch. Over time the stitch would get damaged and the cover would come apart at the seams. Rather than trying to go with a heavier thread I went with the theory of a pair of jeans, " they don't use a huge thread, they use multiple seams". Over the past year I have had to repair some of these covers, but never for torn out seams, because even if a stitch gets rubbed through, there is enough back up to keep from traveling. I am using a #22 needle in the 137-17 series. Scott Quote Share this post Link to post Share on other sites
