More to explore:
Getting the tension on your sewing machine right I love this ;-))
sewing 101: basics of sewing machine maintenance
Understanding Thread Tension - Threads
Sewing Machine Tension-a tutorial
Understanding Thread Tension. Diagrams and how to fix sewing machine tension problems - very helpful! #sewing
How to Sew Leather by Hand or Machine
yessss, understanding thread tension - where have you been all my life?
maybe this will help me...
all you need to know about tension...
Sewing Machine Cover - must make one for my machine!