They are the thread s denier divided by 10.
Thread size for vinyl and leather.
8 to 12 ounces.
The smaller threads don t look great at low stitch counts and won t hold the seam as long.
Leather ounces per yard.
1 to 8 ounces.
This is what i use the majority of the time and it works great for finer work.
If the sewn leather will bear a load or be used for furniture then a 138 thread could be considered.
3 0 mm or greater.
12 to 14 ounces.
We sell nylon thread in eleven thickness sizes that range from hair thin to cord like.
It is strong easy to use and a great choice for sewing fabric leather canvas and vinyl.
Commercial sizes are set sizes of 30 46 69 92 138 207 277 346 415 and 554.
Resistant to chemicals abrasion and sunlight.
I recommend 532 or 632 thread at 9tpi if you re going to use just one size of pricking iron and thread.
Recommended needle size is 16 18 20.
6 to 8 ounces.
While some leather workers and craftsmen use size 92 on leather that is as heavy as 6 8 oz it is really up to personal preference.
The largest size thread that will work well with sewing machines.
1500 meters or 1650 yards per cone.
10 to 12 ounces.
In this video dallas designing dreams online academy will show you how to select thread and needles for your leather project.
12 to 16 ounces.
If you re going to 7tpi i recommend the thicker 332.
Commercial sizes are used for heavy duty threads for sewing heavy upholstery canvas or webbing.
Size 138 thread also makes for a decorative reinforcing thread when used to accent the seam.
As far as width try to keep it wider than 2 5 mm.
8 to 10 ounces.
2 to 6 ounces.
Anything less than a 3 0 stitch length causes the seam to perforate think of when you tear paper out of a notebook.
Use nylon thread for sewing almost anything that requires strength and durability.