I work for a Janome dealer and the repair man told use to never ever use canned air as you are just blowing the lint and stuff up in the machine and onto the computer boards in the newer machines. :oops: He also advised us to tell our customers not to just blow the lint out as there is moisture in your breath that can do nasty things to your machine also. I use different size brushes and a small vac attatchment for sewing machines to get all the lint and thread out. I do it after I finish sewing for the day, it has become a habit and that way I don't have to remember the last time I cleaned the machine.