Hi Giulliano, bobbin showing on the top is usually a tension issue, not a thread issue. Speed can also increase tensions on a machine, have you tried slowing the speed on the fills when running black?

My problem is that white bobbin thead is showing only when I use black and only in tatami fills, its only with black on top, if I use any other color like blue or red, the bobbin dont show on top but when I use black, the bobbin appears on top. I try a new black thread and nothing. The only solution is that when I have to use black, I put black on the bobbin!

Greetings from Argentina! GO MESSI

Hi Valerie,

What machine brand is it? Have all the machines you’ve owned been the same brand? Bobbin thread showing would usually be a machine/bobbins specific issue and you dealer/tech would be best advised to assist in rectifying the problem.

There can be many factors contributing to why the bobbin shows through. Is it only when you wind your own bobbins it appears on the top?

Thanks for adding that Jo! It can definitely be trial and error some times.

Thanks for reading Ellen 🙂 glad you’re enjoying our articles.

Hi Faith, I definitely suggest starting off with our free Digitizing 101 Course. You can find it here https://embroiderylegacy.com/embroidery-digitizing-beginner-cheat-sheet/

Thanks for your input Elaine! Glad you were able to find out what the issue was 🙂