Thread: Setting tension on a zigzag
View Single Post
Old 06-06-2014, 02:39 AM
  #5  
miriam
Power Poster
 
Join Date: Mar 2011
Location: Somewhere
Posts: 15,506
Default
Besides burrs, dried up oil - could be on a thread guide, inside the upper tension or bobbin tension - anywhere along the thread path.
miriam is offline  
Reply