Originally Posted by jordo_99
I was told that the silnylon I was sewing was slipping around and being moved while the needle was still stuck into the fabric, putting pressure on the needle horizontally and causing them to snap.
Interesting point about the throat plate.
This sounds to some degree like user error. Be advised this is a _very common_ mistake that beginners make. It can be caused by pulling the fabric rather than letting the feed dogs do the work. Particularly if the operator is in a hurry and the machine is too slow. You need to keep the fabric taut but let the machine move it along. It takes some getting used to.
I said to a degree because if the machine left the shop without being set up and adjusted properly then the shop bears some of the onus as well. To me this is a sign of a shoddy job and bad quality control. I am willing to revise my estimate of the person as an expert. I'm glad you got a refund rather than having to live with a machine that is not able to be properly repaired by the seller. One of those old Singers is well nigh indestructible if even half way cared for properly. Not sure I would return to the seller of the Necchi for service issues though. Some the information you got from him just doesn't set right with me.