llucas Report post Posted November 24, 2015 (edited) I have a newbie question. I recently purchased an Adler 205-374 that I am refurbishing. I am new to machine sewing leather having only hand stitched up to this point. I recently purchased five one pound spools of 277 bonded nylon thread at a good price. For my holster sewing I purchased some 346 bonded polyester. Here is the question: can I use the 277 nylon for the bobbin and the 346 polyester for the top stitch? Or should I only use nylon top and bottom or polyester top and bottom? Follow-up question: does bonded nylon thread have a shelf life? This stuff is about five years old. Edited November 24, 2015 by llucas Quote Share this post Link to post Share on other sites
benlilly1 Report post Posted December 21, 2015 Bump Quote Share this post Link to post Share on other sites
Art Report post Posted December 21, 2015 Use what you got. Ploy and Nylon have been used together since someone bought two different spools of thread. Might not be Mil-spec, but I'm not the Rock Island Arsenal. For shelf life, modern thread will last forever if you leave it out of the sun. Even if in the sun for a long time, strip off a layer of thread and spray it with silicone lube. Art Quote Share this post Link to post Share on other sites
llucas Report post Posted December 21, 2015 Thanks, Art. Quote Share this post Link to post Share on other sites
