I do this also. When I got my 401 there were a lot of bobbins with thread left. I used some for mending and basting hexies, etc. Both of my machines take a 66. There are a couple bobbins that aren't so those go in my hexie go bag.
Originally Posted by
Onebyone
I use up my almost empty bobbins while piecing. It doesn't matter that much on thread color when piecing. I will also use a bobbin for the top, instead of a spool of thread, to use it up.