You might want to check with the dealer. I was told not to use the metal bobbins in mine because the machine is computerized.

you will learn to read the manual when you hace messed up the machine. If it came with plastic bobbins, that is what you are supposed to use. Ask your dealer.

I would guess if your machine is an electronic computerized machine you shouldn't use metal bobbins. Better safe than sorry.
Mary Louise in OKC

agreed the newer machines are made for lighter weight bobbins

Seems I read the metal bobbins get hotter as they spin, I can't remember the rest. Anyone know?

Gosh... don't throw them out... send them to ME! I'll use em!lol.

Actually, I believe that somewhere, Billy or Brenda or Char said (basically) use the metal bobbins in the all metal bobbin cases. But if you have a bobbin case that's got plastic bits, then use the plastic bobbins in that. It's a weight issue for proper tensioning I think....

good luck...

Is that the reason.... hm.. I thought most men just knew it all...haha

I was told by a lady that sold machines that you are to stick with the type of bobbin your machine originally came with, she said never inter-change them.

my previous machine ate a plastic bobbin. i don't use them anymore.

My Viking will only work with Viking bobbins and then they have to be the latest ones they make. I have 4 machines of different brands and all 4 take different type bobbins.

I just got my machine back from it's annual. They had put my metal bobbin in a baggie with a note. It said to use only the #15 plastic bobbins. I don't know why but will ask them the next time.

I was told that the metal ones will wear out the race more quickly than the plastic ones. I've got metal bobbins too and that's what I use in my Brother as well and 6 years later it is still OK. (You can tell when it needs an oil very quickly as well).
The stitches on this Brother are the best of all my machines.

DON'T DO IT !!!! USE WHAT YOUR SUPPOSED TO. take a good look at the plastic ones they are tapered not flat like the metal ones. why risk damaging your machine. for once listen to the woman !!!

I have a Brother machine too and it will only work with the plactic bobbins. The best thing is to talk to the dealer where you bought the machine. IMHO, if you want to get the best you can out of your machine, then you need to get in touch with your feminine side and read the manual. LOL

I had many metal bobbins, but was told only use the bobbins for your machine. It could do some real damage to your machine.

When all else fails, read the destructions!

Check your book. It may tell you in there.

I have a Brother too and use only plastic bobbins. I just read this on another quilt board:

If your machine came with plastic bobbins, that's what you should stick with. The metal class 15s are intended for use with either top- or front-loading vintage mechanical machines and newer front-loading machines with metal bobbin cases.

Your machine probably has a magnetic hook, and the metal bobbin will interfere with its performance.

Also, just my guess, but the cover over the bobbin is probably see-through plastic, which allows you to see how low your bobbin thread is. Using a metal bobbin makes this more difficult.

Hey David - don't throw out the metal bobbins - remember the Vintage Shoppe - you may have a need for them sometime. I use metal in my old Kenmore and old Singer and plastic in my Brothers.

Then you're taking a BIG chance on ruining your new machine. No kidding, bobbins have to be correct or your stitches won't have the correct tension. If your new machine has a 'bobbin almost out of thread' sensor, it won't work unless you're using plastic bobbins.

If they fit, it doesn't matter.

YES! The brother bobbins have a groove inside the center, and are taller. Read the page about winding in the instruction book!
They gitcha!......and me too

Don't throw them out!
Use them this way. Wind thread on them and carry them for handsewing. Several of them will hold a lot more thread than a lumpy unhandy shaped spool.
Bunches of the filled metal bobbins fit into a little pocket kit.
I also like to wind decorative thread on them.

I was told by my dealer that the metal ones will ruin your machine. I took my metal ones to them and they traded with me. It didn't matter because I wasn't going to take a chance. After all purchasing new bobbins are a whole lot less expensive than buying a new sewing machine.

I have a Brother PE700II embroidery machine that came with plastic bobbins. Constantly having problems with tension etc so I decided to try metal bobbins. Sewed perfectly and have not had a problem since and it has been a couple years. I will stay with the metal and save my sanity.

I've never had problems using the type of bobbins that came with a particular machine.

I have had problems using plastic bobbins with a machine that originally had metal bobbins.

Don't recall whether I've used metal bobbins on a machine that came with plastic ones or not.

If it came with plastic you should stick with plastic.

If one bought a used machine, how would one know which type to use?

My machines are all older, and the instruction books (for some of the machines, anyway) didn't even bother to mention what type of bobbin(such as 15, 66, whatever) to use - much less whether plastic or metal was more appropriate. As far as that goes, some of the machines may be "pre-plastic bobbins"

I sure wish bobbins had some sort of imprint on them stating what they are.

Don't use metal if your machine calls for plastic. You can use plastic for metal tho. The metal wears the bobbin case.

Check the height and width by putting them on top of each other, then side by side. When servicing machines, I use metal bobbins whenever I can. However, some machines will work better with the plastic bobbins. If they're the same size, sew a zig-zag stitch with the plastic, then with the metal and see if there's a difference. Plastic bobbins do get rough edges, and need to be thrown away and replaced.