How often should I have my sewing machine cleaned and serviced?
Sewing machines are a lot like cars. The more mileage, the more often it needs servicing. Letting it sit for extended periods still requires servicing before beginning a journey. Oil and other lubricants settle, and they dry out over time. (When using a machine that has sat, a good indicator it needs service is a burning smell after taking a few stitches.)
Why does the upper thread break?
Often this will be what we consider TNT – thread, needle, or tension. The tension could be too high, the thread could be caught on the needle, or the needle may be too small for the thread chosen.
Why does fabric pucker?
This is often also a TNT issue, a mismatch of needle and thread or the tension is too tight or even too loose. If you are machine embroidering the fabric may not have enough stabilizer.
Why doesn’t the sewing machine,feed properly?
What I find is often a small mistake may have been made like not putting the foot in the fully down position. Fabric is caught up on the foot or something else on the machine.
Another common mistake is the feed dogs were disengaged for a free motion technique and then we forget to re-engage them. – Anne Dale, My Sewing Room, http://www.mysewingroom.ca