Frustration

[MainiacMatt]

Attempting to sew 3-4 oz. Chrome tan with size 92 bonded nylon thread on new to me Consew 206.  

top stitches 

bottom

bottom after cranking down tension

   
 

and then I start breaking thread…

I’ve disassembled, cleaned, and reassembled the tension mechanism, but the problem still persists.  Bobbin tension didn’t seem excessive, so I backed off the tension  screw just 1/4 turn.  No joy!

Any advice is much appreciated.  

[MtlBiker]

4 minutes ago, MainiacMatt said:

Attempting to sew 3-4 oz. Chrome tan with size 92 bonded nylon thread on new to me Consew 206.  

top stitches 

bottom

bottom after cranking down tension

   
 

and then I start breaking thread…

I’ve disassembled, cleaned, and reassembled the tension mechanism, but the problem still persists.  Bobbin tension didn’t seem excessive, so I backed off the tension  screw just 1/4 turn.  No joy!

Any advice is much appreciated.  

What color is your thread?  Some looks white (or light) and some dark.  It's hard to tell if we're seeing the bobbin thread knot come up to the top.  Are you holding your thread tail well at the start of sewing?  What needle size are you using?  Is it a good quality thread or junky off-brand?

Show us some photos of how you have the top thread threaded in the machine.  Do you have your bobbin thread inserted in the correct direction?

 

[Quade]

What needle size are you using? It has to match the thread. If the needle is too small, tension won't work right. 

https://www.tolindsewmach.com/thread-chart.html

My favorite chart. 

[kgg]

38 minutes ago, MainiacMatt said:

Bobbin tension didn’t seem excessive, so I backed off the tension  screw just 1/4 turn.  No joy!

Any advice is much appreciated.  

 

40 minutes ago, MtlBiker said:

Show us some photos of how you have the top thread threaded in the machine. 

Just to add to what MtlBiker said.

What size and type of needle are you using. Should be a #19 or #20 with a 135 x16 needle.

Is the machine threaded correctly for the top thread path and the direction the bobbin spins in the bobbin case as it unwinds from the bobbin?

Is the needle threaded correctly, the needle insert all the way and in the correct direction?

Did you do a drop test on the bobbin and bobbin case to get the bobbin thread tension set correctly?

A few photo's would help of how you have threaded the machine from the thread spool to the eye of the needle.

kgg

[MainiacMatt]

third pic is bottom side after cranking to tension very tight

Thread is all same dark brown color.  Sunlight makes it look like two shades. 

  
 

needle is #20 size

Bobbin is inserted CW

 

 

 

[MainiacMatt]

I’m pretty sure I’m threading correctly

 

 

I think thread is breaking at needle, or at needle guide

[MainiacMatt]

Starting like this…

Sorry pics all posted sideways

[MainiacMatt]

When I try bobbin drop test the bobbin is ejected 1/4 way out of case by spring and seems to bind a little, so  I don’t feel like I’m getting an accurate take on tension

[MainiacMatt]

It’s always the top thread that breaks. 
It will always break when I press the back stitch lever

[Wyowally]

Tensions: if you can free hand pull thread from the loaded bobbin smoothly and pretty easy - and through the top tensioner smoothly but with more resistance than the bobbin thread, then things are close. Loops that big and consistently make me think the the top thread is snagging after the hook pulls it around and turns it loose, just when the needle is trying to pull up, but before it gets to the bobbin thread. You posted good pictures, BTW. Suggest looking at the hook and thread action after the hook pulls the top thread around.

Edited March 18, 2023 by Wyowally
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