Constabulary Report post Posted January 12, 2020 (edited) BTW - when I look at this picture - you probably should install a heavier beehive spring on the tension unit to achieve more top tension - at least I would do that! Edited January 12, 2020 by Constabulary Quote Share this post Link to post Share on other sites
jimi Report post Posted January 12, 2020 19 minutes ago, Constabulary said: BTW - when I look at this picture - you probably should install a heavier beehive spring on the tension unit to achieve more top tension - at least I would do that! Oh! so is that you hot rodding my machine Yeah your probably right Folker but i don´t usually have that 20´s thread in there. Quote Share this post Link to post Share on other sites
Constabulary Report post Posted January 12, 2020 50 minutes ago, jimi said: Oh! so is that you hot rodding my machine Yeah your probably right Folker but i don´t usually have that 20´s thread in there. Yeeeah - bad overall machine you have there (no Singer = bad machine) **kidding** sorry - I somehow have not noticed it´s your machine. I was just scrolling down and noticed the dialed down tension nut so... Quote Share this post Link to post Share on other sites
tibee Report post Posted January 12, 2020 (edited) Thanks for giving it a shot Jimi So it seems like it's going similarly to mine where you have to tighten the tension nearly all the way to get a proper stitch on 5mm+ leather so I suppose that's a bit reassuring but you're not getting little loops like I am so that's a problem with my machine. I appreciate you doing the tests btw. Is that normal though? I've been told that when you pull by hand the top/bottom tensions should be similar or a little tighter on top but in order to get an okay stitch on 5mm+ I have to tighten all the way and when I pull, it's really tight to the point where the needle will bend. anyways my issue now is just the stupid little loops here and there. I did a test with #thinner thread and 110 needle but not much has changed. 3 hours ago, Maukka said: Have you checked the needlebar height is right? And play with check spring tightness and position. If it makes any difference. I'll try messing with the check spring but I wish I could find a manual for this exact machine because it might be a little different from a classic 335. I might end up buying a new hook+ bobbin case out of desperation with the hopes that this is causing the irregular stitch Edited January 12, 2020 by tibee Quote Share this post Link to post Share on other sites
jimi Report post Posted January 12, 2020 No Problem Tibee, the tension on the bobbin when i loosened it 1/2 turn was as if there was no tension at all, i mean really almost 0 resistance. Anyway i think you are at that limbo where the machine is at its limit. 6mm thick is very thick for that machine, i do wallets and stuff on the 335 and belts etc on the Singer 45k which can handle thick leather but not too thin a thread, the only problem is that it leaves teeth marks on the bottom side, that`s why for belts etc it is a good option. Quote Share this post Link to post Share on other sites
tibee Report post Posted January 12, 2020 (edited) To anybody reading this with the same issue, here is the same topic a few years back with great infos which I will give a shot before I decide to take a sledge hammer to my machine. Edited January 12, 2020 by tibee Quote Share this post Link to post Share on other sites
Silverd Report post Posted January 24, 2020 Is the 335 the only small diameter cylinder arm machine for leather available? Its intended for binding applications. is there a non binding version for instance? Silverd Quote Share this post Link to post Share on other sites
Constabulary Report post Posted January 24, 2020 5 hours ago, Silverd said: Is the 335 the only small diameter cylinder arm machine for leather available? Its intended for binding applications. is there a non binding version for instance? There is an arm cover plate which covers the feed dog driving rod or what ever it is called - the thing that moves back and forth and the feed dog is attached to. this is OEM for the 335 https://www.college-sewing.co.uk/91-014643-91-plate-pfaff-335 Or after market: https://www.ebay.de/itm/113842325012 or as a complete set: https://www.ebay.de/itm/113979423902 But check your prats list first, not sure about subclasses but I´m pretty confident that they will fit. Quote Share this post Link to post Share on other sites
