Bonded Nylon N66 thread and 135/17 vs 135/16 needles

[Pinto]

Hi FOlks,

 

I have a couple of questions related to sewing leather.

1) Has nayone used Bonded Nylon N66 Thread? Id it better or worse then normal Bonded Nylon thread.

2) I read that if you want leather point needles you should use 135/6. My machine calls for 135/17. Are these the same needles? Are the interchangable?

 

Thanks in advance.

[Constabulary]

Don´t know what N66 is but reg. needles - 135x17 and 135x16 have the same dimensions. 135x16 is a needle with a cutting tip for leather whereas 135x17 is for fabric but you can sew leather with it as well. The cutting tip depends on what stitch appearance you want to achieve.

This brochure (direct download link) may give you more information reg. needle tips:

https://www.groz-beckert.com/mm/media/en/web/pdf/Sewing_machine_needles_for_leather_and_technical_textiles.pdf

 

Edited August 30 by Constabulary

[kgg]

3 hours ago, Pinto said:

1) Has nayone used Bonded Nylon N66 Thread? Id it better or worse then normal Bonded Nylon thread.

All the info I have seen tots N66 as being stronger but finding that difference is difficult to nail down. What I quickly found is from HighTex N66 Bonded Nylon Thread Technical Info Chart ( https://www.cowboysew.com/blog/heavy%20duty%20nylon%20sewing%20thread.pdf ) showing V138 thread to have a strength of 96.39 N which when converted is 21.7 lb. Basically 22 lbs. while your run of the mill V138 Bonded Nylon is rated as 22lbs. So do the other possible benefits of N66 justify any additional cost??? Now all bets are off with the cheap Chinese stuff.

3 hours ago, Pinto said:

2) I read that if you want leather point needles you should use 135/6. My machine calls for 135/17. Are these the same needles? Are the interchangable?

The needle 135 x 16 and 135 x 17 are identical except for the tips, the sharp end are different. The needles for leather are 135 x 16 which have a tip shaped like a diamond or wedge made to slice/cut through the leather where as the 135 x 17 tips are more rounded to separate the fibers of the fabric as cutting the fibers would weaken the material.

 

kgg

 

[Pinto]

11 hours ago, kgg said:

All the info I have seen tots N66 as being stronger but finding that difference is difficult to nail down. What I quickly found is from HighTex N66 Bonded Nylon Thread Technical Info Chart ( https://www.cowboysew.com/blog/heavy%20duty%20nylon%20sewing%20thread.pdf ) showing V138 thread to have a strength of 96.39 N which when converted is 21.7 lb. Basically 22 lbs. while your run of the mill V138 Bonded Nylon is rated as 22lbs. So do the other possible benefits of N66 justify any additional cost??? Now all bets are off with the cheap Chinese stuff.

The needle 135 x 16 and 135 x 17 are identical except for the tips, the sharp end are different. The needles for leather are 135 x 16 which have a tip shaped like a diamond or wedge made to slice/cut through the leather where as the 135 x 17 tips are more rounded to separate the fibers of the fabric as cutting the fibers would weaken the material.

 

kgg

 

Thanks KGG that is great info. I appreciate it.

 

Pinto

[kgg]

On 8/30/2024 at 11:43 AM, Pinto said:

1) Has nayone used Bonded Nylon N66 Thread? Id it better or worse then normal Bonded Nylon thread.

I decided to go down further into this rabbit hole.

I use A&E sewing thread which is made in Canada and the USA so I figured I could find some good info from a brand name manufacturer.

1. Nylon 66: Anefil Nylon® AB
https://www.amefird.com/wp-content/uploads/2023/10/AE_Anefil_Nylon_AB_Product_Literature.pdf

Constructed with 3 ply multifilament, bonded nylon 6.6

Tex 135 (V138) Strength: 23.8 lbs.

Low-profile stitching

2. Bonded Nylon: Anefil Nylon®
https://www.amefird.com/wp-content/uploads/2023/10/AE_Anefil_Nylon_Product_Literature.pdf

Constructed with twisted multifilament, bonded nylon

Tex 135 (V138) Strength: 23.8 lbs.

Low-profile stitching

According to A&E both threads have the same strength of 23.8 lbs. main difference other then construction appears to be in the threads application as Anefil Nylon® AB is used in the sewing of automobile air bags as an example. I wasn't able to get an accurate cost difference between the two.

kgg

 

 

Edited August 31 by kgg