Con Report post Posted April 25, 2020 I am thinking of buying an insole stitcher – a manual basic machine listed as RC-32-4A (see pic) from www.robinindustry.com Bobbin arm at 20mm thick. On inquiring I am told the needle size is 45x230 but I'm not familiar with needle to thread size options... I am looking for some guidance from members who have knowledge about this needle to thread challenge. Twisted waxed linen and sometimes polyester thread of 1mm round is what I use when hand sewing a midsole to a one piece upper and this works fine. If I use the same thread would this be tight or sloppy as a lock stitch in a hole made by a “needle size of 45x230” is my question. Any guidance appreciated. Quote Share this post Link to post Share on other sites