M Size Bobbin Center Hole Inconsistency Question....

[Bert51]

You are right Gregg, that is why I purchased both lots from dealers. I sent one lot back to the dealer for a refund and I am still waiting, said he never got them?

If I have run out of old bobbins, I have to wind my bobbin before I start, so I can keep sewing.

Bert.

[RemingtonSteel]

My Ferdco 2000 Pro came with two bobbins, so I purchased an extra one to try out, before buying several, and encountered this same problem.  The replacement bobbin purchased was too large for a friction fit on the Bobbin Winder Spindle.  The solution, at least for me was a simple fix, and cost no more than a No. 1 paper clip. 

I cut the end of the paper clip that goes through the small hole flush with the inside surface of the bobbin side wall, so that it would not interfere with, or damage the thread. This solution did not involve any modification to the Bobbin Winder Spindle , and actually works well, at least for me anyway. 

[Wizcrafts]

3 hours ago, RemingtonSteel said:

My Ferdco 2000 Pro came with two bobbins, so I purchased an extra one to try out, before buying several, and encountered this same problem.  The replacement bobbin purchased was too large for a friction fit on the Bobbin Winder Spindle.  The solution, at least for me was a simple fix, and cost no more than a No. 1 paper clip. 

I cut the end of the paper clip that goes through the small hole flush with the inside surface of the bobbin side wall, so that it would not interfere with, or damage the thread. This solution did not involve any modification to the Bobbin Winder Spindle , and actually works well, at least for me anyway. 

That is friggin brilliant!

[Bert51]

Thanks RemingtonSteel, I must try that.

But as I paid top dollar for what I was told Adler Bobbins I should not have to.

Now all I need to do is workout a simple fix like that for the Singer 31K47 bobbins that don't wind properly.

Bert.

[RemingtonSteel]

On 1/16/2020 at 10:03 PM, Wizcrafts said:

That is friggin brilliant!

Thanks Wizcrafts. I have a light bulb moment every now and then.

 

On 1/17/2020 at 2:45 AM, Bert51 said:

But as I paid top dollar for what I was told Adler Bobbins I should not have to.

Bert, I agree!  When you pay good money for something, you want it to work right out of the box... period.

I am wondering how much of this is an issue with the aftermarket bobbins, and how much of it is an issue with the bobbin winder spindles on the various clone machines, at least on the 441 clones anyway?  I purchased a bobbin for Cobra Class 3, and 4 machines from Makers Leather Supply, as I was buying some templates from them anyway.  They sell Cobra machines, so I assumed that the bobbins they sell are the Cobra OEM bobbins (could be wrong as the bobbin is steel, not aluminum), and that they fit the Cobra machines perfectly. Yet the center hole is slightly too large for a friction fit on my Ferdco.  So either the bobbin is not OEM and not sized correctly for the Cobra's, or there is a difference in the diameter of the bobbin winder spindle between the various 441 clone machines on the market.  If it is the latter, that could make it hard to find bobbins that fit correctly without trial and error.