tuffcase Report post Posted March 22, 2010 A local shop has closed and I'm looking at both of these machines. Are these models any good, are there any known problems, and what is the largest thread each can use? I've searched the internet and the only thing I found is that the bobbin for the National is hard to find. Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted March 22, 2010 A local shop has closed and I'm looking at both of these machines. Are these models any good, are there any known problems, and what is the largest thread each can use? I've searched the internet and the only thing I found is that the bobbin for the National is hard to find. I have a National 306N and it ias the best walking foot machine I have ever owned. I get my needles and bobbins from Bob Kovar, owner of Toledo Industrial Sewing Machines and member of this forum. He has parts should you need them. He used to be a dealer of National machines, which were made in Japan. They have a lot of parts in common with Consew machines, especially the 206RB series. The 306N uses a large M series bobbin that holds about 50% more thread than a standard bobbin. The largest thread I have sewn on the National is 207, top and bottom. Most people would recommend using 138 in the bobbin and 207 on top. The 306N uses series 135x16 and 135x17 needles, available from Bob Kovar, in sizes up to #25. Quote Share this post Link to post Share on other sites
