LOL, BTDT (been there, done that!) My Janome will tell me if I'm out of thread or if it is broke, but the bobbin is always hid way underneath a big bulky project when it decides to run out. Sometimes I'll put a new, full one in just to make sure that doesn't happen. Then I noticed how much more mileage I can get out of that almost empty bobbin! I've often wondered why someone doesn't invent a machine where you use an actual thread spool to feed through.