My cousin in Oklahoma has collected all kinds of wood spools over the years, so she is saving those for me. I do believe that the spools in that mending kit I previously mentioned will work, but haven't been able to try them yet!
Jeanette There are two "brands" of machines who use the two-spool technology, the Eldredge Two Spool and the National Two Spool (I think both are manufactured by the same company).
Jeanette