CB3200 needle thread fraying

[koreric75]

32 minutes ago, Ferg said:

Well, I am no expert on stitching/sewing but I have been doing it a long time.

Sorry, there isn't anything wrong with the organ needles, most problems with thread fraying in my experience is WRONG SIZE NEEDLE!

A side note: You have the presser foot pressure too tight. You are making a deep impression with the foot into your leather.

I understand you are using a scrap to sew in the vid. Your adjustments are way off.

 

Ferg

I'm using a #25 sized needle and #277 thread top & bottom when holding the thread at an angle the needle will glide right down it ( i think it was you that gave me that tip discussing the 78-1 singer I've been trying to get up and running?), I dunno about the presser foot, I backed off the presser foot adjustment as far as i can, it still leaves an impression but slighter, still getting the frayed thread tho.

[JLSleather]

Needle is not too small.  I use a #24 needle with 277 thread up and 207 thread down --- never an issue.  Depending on the thread (not all thread is equal) I have been known to step up to #25 when sewing with 277 top 'n' bottom.

 

[jimi]

so did you try moving the foot slightly to the side??

[koreric75]

1 minute ago, jimi said:

so did you try moving the foot slightly to the side??

I'm not sure i understand the question, are you talking about the presser foot or walking foot?  Not sure how to move either side-to-side...there isn't any free play in either tho

[jimi]

yes the walking foot with the hole. can you move it to the right a bit?

[Ferg]

Your needle size is correct. Yes I gave you that info some time back. Works for me.

Your foot pressure is about where the rod will pop out, spring is strong. My 3200 measures 1 1/16" from the surface of the arm to top edge of adjusting nut. 

Yours is doggone near 1 1/4" actually.

Rough needle "eye", bad spool of thread, ----- Have you tried changing the thread? Even a different color will make a difference sometimes. Your "Hook" could have a rough spot or slight knick on it.

I would check everything the thread is going through from the needle down. You could have a "Burr" inside the foot portion the thread goes through.

Easiest way to check for a burr is to take the center foot off so you can see inside of the hole. The foot you have on the machine can be rotated slightly to make sure your needle isn't pressing the thread too tightly against the side of the hole.

Ferg

Edited June 3, 2018 by Ferg

[koreric75]

1 minute ago, jimi said:

yes the walking foot with the hole. can you move it to the right a bit?

I don't know, it's solid mounted, the hole is in the presser foot, it's solid mounted..don't see any adjustment to move it...I'll research some more, been watching cowboy machine videos most of the morning, rewatching others...haven't found an adjustment for that, did just watch one for adjusting the travel of the walking foot/presser foot and height ratio...

[jimi]

i take it your foot is on a round bar ?? might be wrong?? if so loosen the screw or screws to slightly move the foot to the right?

[koreric75]

3 minutes ago, Ferg said:

Your needle size is correct. Yes I gave you that info some time back. Works for me.

Your foot pressure is about where the rod will pop out, spring is strong. My 3200 measures 1 1/16" from the surface of the arm to top edge of adjusting nut. 

Yours is doggone near 1 1/4" actually.

Rough needle "eye", bad spool of thread, ----- Have you tried changing the thread? Even a different color will make a difference sometimes. Your "Hook" could have a rough spot or slight knick on it.

I would check everything the thread is going through from the needle down.

Ferg

Yessir, swapped from white thread (was more pronounced on white) to black and brown, but all have the same result.  I can't feel any nicks along the shuttle race or hook (where i can feel with out disassembing), used a soft cotton swab and gently ran across the areas that are reachable, no roughness or burrs,  I don't think removing the hook/bobbin case would void the warranty, but with the needle plate off (knew this was a safe one for me...lol) i can see/feel most of the edges...only sharp area is the end of the hook, but didn't have any nicks or burrs that i could see or feel, got out the soldering station magnifier glass too...lol.  There is a point when the loop goes behind the bobbin case that i can't see while it's moving that i am suspicious, it seems to line up with where the frayed thread comes up...it's just the backside of the hook right?  is there anything else in there to rub against?

Just now, jimi said:

i take it your foot is on a round bar ?? might be wrong?? if so loosen the screw or screws to slightly move the foot to the right?

oh i think i understand, rotate the foot to the right on the bar?  I'll check and see if there is a keyway or notch that would prevent that...brb.

[jimi]

yes sorry rotate.