Sewing Science - Up Close with Sewing Needles
First, the 90/14 ballpoints. I had a new and some used. (These are Organ Needles, FYI).
|New needle, Magnification 2670x|
|Used needle, Magnification 2970x|
|Used needle, Magnification 2510x. This one is my favorite. I like the dent in the top of it.|
Now to check out some 70/10 regular needles. Here is a fresh, unused one:
And below, the used needle. This needle was also only used for one day, I used it to finish up two pairs of wool pants I was sewing assembly-line style. So basically side seams, hems, waistband. That's it. And look at them:
|Sweet merciful crap! Look at how blunted the tip is. Magnification 220x|
|Gouges seen at 1830x|
|The tip at magnification 1700x|
|Magnification 5980x. Field of view is ~40 um.|
This was a big eye opener. I decided to be brave and check out my serger needles. For some reason, I change my machine needles every project and my serger needles.....annually. Ugh. Why? I buy needles by the 100 so it's not like I don't have plenty of fresh ones.
Ok, here is a fresh pair of 90/14 Schmetz serger needles:
|67x, 384x and 1760x magnification, respectively|
|Left needle, 1090x mag|
|Left needle tip, 2540 mag|
|Right needle, 752x|
|Right needle tip (I am still calling it a tip but look at it), 892x mag|
What exactly is that needle tip supposed to sew?!! That is horrifying, and I'm so ashamed. Let that be a lesson to ye sewists! My needles have seen to much. Don't let this be you.
I've found this very interesting (but I'm a geek) so I have a more few more plans for lunchtime sewing related SEM imaging that I'll be sharing on my Instagram and on the blog, for those who are interested! Thanks for reading and change your needles!!!