I have a Brother LB6770 and a few years back I was having a similar problem with shredding and my machine guy found a guide that was catching so he filed it off and it corrected the problem. Your "fix" was cheaper than mine if your hubby could do it.
Not sure if it is a common problem with Brother machines but worth knowing if you own a Brother machine not sure about other makes but worth looking at if you have the same problem and yes didn't cost anything I was getting to the point to ask my repairman to sort the problem out
This is on what brand of embroidery machine--I have thread shredded in the tiny spring in the tension [Baby Lock Ellisimo Gold] I've tried pipe cleaners, the flattest tweezer, little brushes that would fit in the slot. My warranty is out so might have husband break a seal if it has one just to get that danged little narrow piece of plastic off, then I could reach it and grab it. Still sewing out great so hate to fool with it yet and don't want to carry the thing to sewing shop for servicing yet. My shredding happened because I didn't have the new end of the spool of thread unwound correctly so it pulled tight and broke.
Chris, thank you thank you for posting this picture - I am going to have my DH take a peek and see if something like this is causing my machine to shred thread! I will let you know!! Thank you for the private message!! Hugs, Laura*
Remove the out casing and watch what happens that is what I did and I discovered the thread was getting caught on this tiny knob of plastic every time it did it my thread broke and was shredded which for some reason was happening all the time after filing it down smoothly
NO MORE TROUBLE
So glad you found the problem...so frustrating for you, too..especially having taken it in to the repair man and he didn't discover the problem and then buying a new rotary hook...but so glad you are up and sewing smoothly now!
Yes a happy bunny again and just finished a custom embroidery design so thats good
Good job locating that annoying bit. (I removed your duplicate post for you.)
Wow it's great you found the source of the shredding. Thanks for sharing this invaluable information.
Great if you can find the trouble and fix it yourself. Well done, always frustrating when you have a problem. Happy sewing full steam ahead. Sandra.