Regarding yesterday's post about changing needles, I wanted to add something. The "rule of thumb" is to change the needles after 6 - 8 hours of sewing. But what exactly does that mean? Some sewists could be sewing (needle moving up and down, NOT just in the sewing room) 6 - 8 hours in one day. For others, that might be several days or weeks.
The guideline I use is to wind 4 or 5 bobbins, and when they are done, it's time to change the needle and CLEAN the bobbin case. You'll have to listen to your machine ...
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