Nelsonic Report post Posted July 27, 2015 I've been reading various posts and some people mention that sometimes a different thread size is used for the bottom thread vs. the top. I'm new to sewing leather, any posts explaining why one would do that and when it comes in handy? Thanks! Quote Share this post Link to post Share on other sites
Art Report post Posted July 27, 2015 On needle and awl machines, it will give a tighter stitch. Also you can get more thread on the bobbin. On a threaded needle machine, there is the more thread on the bobbin thing and it gives a little more clearance if you are pushing the thread limits of the machine. When it comes to modern thread, 69 and even 46 will hold many things together without problems. Think of thread as about 50% or so a design element. Threads like 346 or 415 are going to look a little chunky on a wallet (looks ok on biker chain wallet though) and 138 might look a little puny on any part of a saddle. You can only take this so far. If you have a medium weight machine like say a Cowboy 277R, you are not going to be able to run 346 in it no matter what the bobbin thread, but you can run 207 and maybe even 277 with a 138 bobbin. That would be a squeeze but you might get by. But the original thought was that it gives a tighter stitch. Art Quote Share this post Link to post Share on other sites
Nelsonic Report post Posted July 27, 2015 (edited) Great, thanks! nelson Edited July 27, 2015 by Nelsonic Quote Share this post Link to post Share on other sites
