Originally Posted by
Cari-in-Oly
When a titanium needle breaks it shatters and can destroy a bobbin case or cause even worse damage. They were originally designed for high speed commercial machines like embroidery machines that have steel bobbin cases that are outside of the machine body, unlike the bobbin cases of modern home machines.
Cari
I didn't know that. I have a package of titanium needles but will save them for my vintage machines that have metal bobbin cases. Thanks for the info.