juliasb

Normally my rule of thumb is Don't Touch The Tension! However when the tension is off on a machine I always forget how to do a proper adjustment. I know the upper tension is most frequently the problem but not always. On one of the older machines I have here it has a nice looking stitch coming down with no loops. The problem seems to be in the bottom which appears to be just a straight line of thread. I know this too could be upper tension.
I know this is most likely a very repetitive question here but how do you know which needs adjusting and how do you know if is to tight or to loose? I sure would like to try my hand at fixing this myself. I know there is a world of knowledge here on this subject. Thanks