So, I was sewing away on my Janome Horizon 7700, doing about 20 yards of blind hemming for a pleated bed skirt. I really hadn't used a blind hem foot before, but wow, does it ever make it easier.
Unfortunately, the fabric I was using was decorator weight, so when it came to going over the thick seams, I had to 'help' the fabric through a bit. I guess I tugged more than I thought. I pulled things just enough out of allignment to break a needle on the little blade in the middle of the foot. That bent the blade and twisted it enough that even though I straightened it with my hemostats the best I could, It didn't sew well after that.
Then I had an 'a ha" moment. My 'take to class' machine is also a Janome (QC6260) So I searched into the gadget box and sure enough, it had a similar blind hemming foot. Snapped it on and kept on sewing !
Yay for surprises at 1 am.