Singer double needle thread snagging and skipped stitch on one side

[DMH]

I need help figuring out why the thread keeps snagging and stitches are skipping on one of my needles.  Both sides have the same weight thread and needle size, but the left keeps balling up the thread and skipping stitches.  I've adjusted the tension multiple times, but it's not getting better.  

[kgg]

59 minutes ago, DMH said:

I need help figuring out why the thread keeps snagging

A couple of questions:

i) what size of thread are you using with what size of needle?????

59 minutes ago, DMH said:

I've adjusted the tension multiple times, but it's not getting better.  

ii) Which tension are you adjusting, the top tensions or the bobbin tensions???

iii) To set the bobbin thread tensions are you doing a drop test????

iv) Have you checked all the guides / feed dogs / needle plates to ensure one hasn't got a rough spot???

v) Have you replaced the needles with new ones???

vi) Are the needles going down in the center of the presser feet / feed dog / needle plate???

vii) Needles installed all the way up into the guage and the gauge is set / originated properly???

kgg

 

 

Edited 4 hours ago by kgg

[dikman]

My first thought was a burr somewhere on that side that's catching the thread?

[DMH]

I'm using tex 80 thread with #20 needle.

I've adjusted the top tension

I also replaced the needle as soon at it happened, but same result on that left needle

I added a video I just took, but of course it worked perfectly when I recorded

I'm starting to think it may be the bobbin.  That's the only most recent change I can think of.  In my other post when I was timing machine you will see I got everything dialed in without any issues until now.

 

[nylonRigging]

2 hours ago, DMH said:

I'm using tex 80 thread with #20 needle.

I've adjusted the top tension

I also replaced the needle as soon at it happened, but same result on that left needle

I added a video I just took, but of course it worked perfectly when I recorded

I'm starting to think it may be the bobbin.  That's the only most recent change I can think of.  In my other post when I was timing machine you will see I got everything dialed in without any issues until now.

 

 

Common with all double needle and the L-Needle side, and That is just the 'nature of the beast' all with Double-Needle machine . You need to use/Buy the best 'bonded' nylon on that double needle . Or buy an opposite twist thread cone for that L-Needle Side .
If you use a good quality bonded thread. You can go for quite a while sewing without the L-Needle side doing the Frey/twist problem, but Even If You Have Mechanically perfect machine, Proper thread and Needle size. you still need to keep an eye on the L-side Thread. using Lesser quality thread will just amplify the quickness of the flaw and will just frustrate the hell out of you all  day long. I been using double-needles for a Looong time.
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edit add:

Just change out your thread brand for now . I know it a pain in ass especially if you got a good color code you found and like, and 1 Lb. Cones are expensive when buying a bunch of them for the specific job you doing. but Most people, small shops Never buy opposite Twist for that L-side . Just getting a good quality bonded will do you good job of retarding the L-side problem from happening as much throughout the day, and your work stay quality.

also.. Nice. looks like you into working up some custom denim Jean patterns ? . I always thought in back of my mind that if I had not gotten into what I been doing now sewing. That I would have really liked to do a line of custom Jeans. ... LOL

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Edited 59 minutes ago by nylonRigging