How important is it to change your needle? Well, I can tell you now, it's very important. Let me tell you about it....
I'm currently working on a new pattern that has patchwork in it. Before I start cutting, I do math - how big my applique block will be, and how many squares and what size. Math is not my favorite, but I got it all worked out on paper. On Paper.
I started cutting and stitching. Cut my applique block the right size, cut the blocks, and started stitching the blocks into rows. They were a quarter inch too short!! Was it my math???
I thought it was, so I trimmed my applique block down 1/4". The first row fit fine. I went back to my math, and there was nothing wrong with it - even had hubby check - so I took a look at my needle!
Sure enough, it was off just enough, even with my single-hole 1/4" foot. Maybe 1/16th of an inch, each seam, it sure added up in a hurry.
The new needle went in, and the next row was perfect. Unfortunately, I had already cut my applique block down. But I made it fit.
I have to add, I checked my seam with my ruler, and it said it was 1/4" - but it wasn't.
So, don't be cheap like me, go ahead and put a new needle in. Honestly, I don't know why I didn't, I buy them by the hundred count box, and they're not expensive. If you're finding your accuracy suffering, check your needle!
Hopefully I'll remember this post......