Julien Report post Posted September 30, 2022 (edited) Hello, I begin to thought that slippage gets bad between the hook and Bobbin cap of my machine 669 both are in hard steel have you got some advices / Tools / Gum / materials or speacial cream, for polish them correctly ? Thank you Julien Edited September 30, 2022 by Julien Quote Share this post Link to post Share on other sites
shoepatcher Report post Posted September 30, 2022 Julien. please take a short video of your machine and what it is doing. Thank you. glenn Quote Share this post Link to post Share on other sites
