Hello all:
Radio Shack has a Ozone friendly dust remover spray in a 10oz can. I use it a lot for radio work I do and found it comes in handy for blowing out the bobbin compartment and other parts on the machine.
FWIW.
Terry
Using a brush, and then vacuuming works far better for cleaning out sewing machines. Blowing just forces bits deeper into nooks and crannies. The only thing I use canned air for is my keyboard.
I have found it very useful for one of my cats who likes to go in spaces where it isn't practical to use the water spray to correct her behavior. ;-) She knows what the can is, what comes out of it, and she doesn't like it at all. LOL!
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