Juki 1508N Top Thread

[BMW]

Thanks again for all the advice guys. Wish you had been the salesman I worked with.

I think I will try and stick with the 138 for now. I have only used 69 so far and don't know what the 138 will look like or how much the stitching will stand out. My hope is the 138 will have much more visual effect than the 69.

Thanks again!!

[Wizcrafts]

Thanks again for all the advice guys. Wish you had been the salesman I worked with.

I think I will try and stick with the 138 for now. I have only used 69 so far and don't know what the 138 will look like or how much the stitching will stand out. My hope is the 138 will have much more visual effect than the 69.

Thanks again!!

If you want the top stitches to stand out in thin leather (or cloth), you must use a topstitch thread. This is similar to button thread. It is a heavy weight but soft thread that still forms nice tight knots inside the material. Wawak is your friend when it comes to all tailoring supplies, like this type of thread. You can test out button or topstitch thread by visiting your local Joann Fabrics' sewing department. Don't say anything about sewing leather or you'll lose the sales people. Just say you want a heavy topstitch or button thread that can be used in quilts, jeans, or overcoats. They understand that concept.

You may want to try using the same construction of thread, but a size thinner, in the bobbin.

[BMW]

Thanks Wiz!

I am an embroiderer by trade and know Rayon and Poly for the embroidery business. Leather is new to me.

Do you mean to not use bonded nylon?

[Wizcrafts]

Thanks Wiz!

I am an embroiderer by trade and know Rayon and Poly for the embroidery business. Leather is new to me.

Do you mean to not use bonded nylon?

If you are sewing into thin, soft temper leather, button or topstitch thread will hold it just fine. A lot, but not all, of the vests and jackets I repair are sewn with heavy polycore thread, not nylon. That said, 95% of my sewing is done with bonded nylon thread. I have machines set up with different sizes of thread. I switch machines to change thread sizes. All I change on most of my machines is the color of the thread. Most of my machines have thread stands holding 4 or 5 cones in different colors.

FYI: Bonded nylon thread is rated by its tensile strength. B69 is 11 pounds. B92 is 15 pounds. B138 in 22 pounds and thus. Dopuble the size, double the breaking strength. You also get bigger lockstitch knots once you exceed #69 thread. At #207, the knots are well over a half millimeter in folded diameter. Black bonded nylon is usually double dyed and even tougher to fold into small knots.