Featherweight: bobbin jumping

I had occasion to use Betty Featherweight while Pfrieda Pfaff was in the shop
for a tuneup. Betty stitches very well for a 69-year-old but on occasion the
bobbin thread jumped out of the groove. It was easy to correct, but I had to
keep doing it. The stitch tension (top and bottom) was fine except when the
thread jumped.

Any preventive suggestions?



Nann in Winthrop Harbor, Illinois
* * * * * * * * * * * * * * * * * * * * * * * * * * *
"One of the advantages of being disorderly is that
one is always making exciting discoveries."
A. A. Milne
* * * * * * * * * * * * * * * * * * * * * * * * * * *

I won't name names or even hint as to who - but we have had folks here
who were using a bobbin or bobbin case that was not the one for the SM. Have
you tried changing bobbins? Do you have the right bobbin case for Betty?
You don't have to answer. Just a thought.
I will overlook the remark about stitching well for a 69 year-old.
Polly

"Nbhilyard" wrote in message
...
I had occasion to use Betty Featherweight while Pfrieda Pfaff was in the
shop
for a tuneup. Betty stitches very well for a 69-year-old but on occasion
the
bobbin thread jumped out of the groove. It was easy to correct, but I had
to
keep doing it. The stitch tension (top and bottom) was fine except when
the
thread jumped.

Any preventive suggestions?



Nann in Winthrop Harbor, Illinois
* * * * * * * * * * * * * * * * * * * * * * * * * * *
"One of the advantages of being disorderly is that
one is always making exciting discoveries."
A. A. Milne
* * * * * * * * * * * * * * * * * * * * * * * * * * *

did you happen to be using 60 wt. thread? I've noticed my FWs will
bobbin-jump if I try to use that lightweight thread, and I have to use at
least 50 wt. thread in the bobbin.
Buckeye Bev

"Nbhilyard" wrote in message
...
I had occasion to use Betty Featherweight while Pfrieda Pfaff was in the
shop
for a tuneup. Betty stitches very well for a 69-year-old but on occasion
the
bobbin thread jumped out of the groove. It was easy to correct, but I had
to
keep doing it. The stitch tension (top and bottom) was fine except when
the
thread jumped.

Any preventive suggestions?



Nann in Winthrop Harbor, Illinois
* * * * * * * * * * * * * * * * * * * * * * * * * * *
"One of the advantages of being disorderly is that
one is always making exciting discoveries."
A. A. Milne
* * * * * * * * * * * * * * * * * * * * * * * * * * *