ted 777 Report post Posted January 23, 2013 I am new to this and trying to learn to use it. I recently bought a Singer model # 31-15 can any one give me information on this machine size of thread, needle and size of leather I can sew on it. Any information woul be of great help. I hope I'am doing this right. Please respond so I know I'am getting my message out. Thanks Quote Share this post Link to post Share on other sites
dirtclod Report post Posted January 23, 2013 (edited) I generally use size 69 thread but have used up to 138 thread. I'm not sure off hand what size the needles are. Call Bob at Toledo Sewing Machine 866 362 7397 and he'll fix ya right up with thread and needles. Edited January 23, 2013 by dirtclod Quote Share this post Link to post Share on other sites
