Originally Posted by
ghostrider
I try to change mine every 8 hours of sewing time (piecing, quilting, binding, mending, doesn't matter), more often if I'm doing a lot of paper piecing or sewing through a lot of fusible anything (web, stabilizer, etc) because of the added adhesive. Dull needles on mine do 'thunk' as they hit the fabric. They have to punch rather than pierce their way through.
This is when I change my needle also...when I hear a thunk when going over a multiple intersection. Other wise I clean everything out when I run out of bobbin except for the needle that is only when I start to hear the thunk. I am trying to teach myself to change needle after every quilt now as I purchased 100 organ needles last month (well worth the price for so many)
Jeri