Debd

I use a 1" paintbrush on my Bernina, and it works just fine!

Murphy

I use canned air and have had no problems. I also use fine brushes.

FroggyinTexas

Ditto. I have several small artists' brushes--not the expensive ones--and use them. They are great.froggyintexas

Stitchit123

I use a small short bristle make-up brush while working on a project but for a good cleaning I use canned air

jmanghamom

I use cheap paint brushes. The kind you use for oil painting. They are soft and have long handles and you can really get into the tight areas.

jhoward

I have 2 Berninas and use a small makeup brush.

PattyAnn

Thank you all so much for your suggestions. I feel more confident on what to use when keeping my machine clean.

grammysharon

I use brush and a attachment from my vacuum cleaner made especially for sewing machines.

penski

i use my brush

3plus2granny

I have a 730 also. You can use an artist's paintbrush or even a pipe cleaner. I took a class once where the teacher showed us how to use the pipe cleaner to catch the threads that might get stuck in the upper threading.

Good luck.