toxo

I can't offer much because my 341 came fully built with a speed reducer which of course improves the torque. Also when I asked for confirmation of anything like does it go in the same hole in reverse for instance, it was my actual machine that they videoed

Now you're just trying to blind me with science. All I know is my machine works perfectly well with one thread coming from the bobbin. All I'm saying is take the bobbin away. That's all. The bobbin case doesn't move.

But NOTHING would change! I'm not talking about changing anything. Imagine no bobbin, just a tube coming up about a half inch from the inside bed of the hook or the bottom of where the bobbin used to sit. now imagine a thread coming out of that tube and going through the same slit and tension spring in the bobbin case as it does now. If you can't see that you have to tell me why because nothing changes.

I never professed to be a sewing machine expert. What I said was IF you could get a tube coming from below into the the bobbin space through the center of the revolving hook mechanism without interfering with the hook mechanism it could work. The cone thread would simply relave the bobbin thread. Everything else doesn't change one little bit. I was talking about a normal horizontal bobbin. At no time was I talking about any other mechanism and certainly not moving shuttles. Are you saying that IN PRINCIPLE it couldn't work Wiz?

The bit I hate is when you're about to start a decent run. You have to check the bobin and then 9 time out of 10 you waste what's left on there and put in a new one to make sure it's not gonna run out.

From a cone sitting somewhere below. It's the principle I'm trying to get across. I know it's possible. The route that the thread takes from the cone is something sewing machine people can work out. I imagine a tube of some kind that's sealed at both ends so as not to interfere with oiling and such.

I'm gonna try just once more because I can see what you can't and I know there must be others out there that know I'm right but they're not coming forward so I'm gonna leave it after this post. I'm beginning to think you must be a troll windind me up . Either that or YOUR picture is so strong in your head that you can't see what I'm talking about. Let's get back to basics. The bobbin THREAD, not the bobbin itself comes from the bobbin, goes through the tension mechanism in the bobbin case and is picked up by the hook along with the top thread right? From there the hook carries the top thread and the bobbin thread around the bobbin case and comes back to where we started. Now let's go back to where we started. ie, the bobbin THREAD coming from the slit and the tension mechanism. Now. just humour me and imagine that NONE of that process is changed at all EXCEPT that there's NO bobbin at all. What used to be called the bobbin thread is now called something else because there is no bobbin any more, just a thread coming up from the center of the space that the bobbin used to occupy in the center of the bottom of the hook mechanism and going through the same tension mechanism as usual. If you can't see it now I give in.

OMG! You said, "you can't just wrap a single strand of top thread around the bobbin thread without the entire bobbin spool passing thru the loop of the top thread." That's EXACTLY what happens every time a stitch is made. The bobbin doesn't move AT ALL. The only thing that moves is the hook. Show me where the bobbin leaves where it sits and passes through anything? If you're talking about the thread going AROUND the bobbin CASE that also doesn't move, I'm not suggesting that that will change, in fact nothing will change from the way it works now except the thread coming up from the center of the revolving hook.

Of course that's relevant and I don't understand what goes on underneath the hook but can you not agree that IF you could get a sealed tube coming from below, going through the center of the hook so it doesn't interfere with it and coming out where the bobbin current sits it at least SEEMS like it would work?

This makes no sense to me! Are you suggesting that the whole bobbin has to move somehow?

Woah! Where did moving shuttles come from? I'm talking about a standard machine where the bobbin simply rotates as a reaction to the thread being pulled by the hook. apart from this rotary movement the bobbin doesn't move at all. It sits inside a bobbin case that doesn't move at all. the bobbin thread goes through a slit and a tension mechanism that also doesn't move. In short, the ONLY thing that moves is a revolving hook. Now imagine a bobbin that doesn't move at all. In fact imagine NO bobbin at all, just a thread coming from a cone somewhere and going through the same slit and tension mechanism as normal. The only fly in the ointment that I can think of is getting the cone thread coming up from below somewhere into the tension mechanism WITHOUT interfering with the hook and I'm sure there are many minds greater than mine who can work that out.

I can't understand what you're saying!!! We are talking about a normal walking foot machine with a horizontal bobbin right? The bobbin thread comes from below and interferes with nothing. Everything is normal. The hook comes around, picks up the bobbin thread, puts it through the needle loop and carries it around the static bobbin case for the next stitch. Explain what I'm missing.

Everything you've said above is ok except for handmaking the product. Buying product from China (say) would work because you can buy to test and if it doesn't work you can junk it and choose something else until you light on the items that sell. Making something by hand that might take an hour or three or four or a day is a different thing altogether. To make enough product to go through what you're advocating would take some time and at the end of the process it could come to nothing and you've wasted a lot of time. I have a very logical mind and so wish it was as easy as you say but the variables when handmaking are different. When you have supermarkets and online stores sell substandard stuff it's hard. As I've said before many of the public don't know or care where it comes from or what it's made of and some of those that do simply can't afford hand made stuff. This why I've said that where you market your product is really important. Of course, a couple of years down the line, if you're doing a good job you might start getting commissions and even small contracts but until then it can be hard to even get back what you've put in.

I think you're over thinking it. The only reason that the bobbin turns i to deliver thread. The bobbin case doesn't turn. A thread coming from below into a static bobbin and coming out of the same hole as normal achieves the same thing and doesn't interfere with anything. Everything else remains the same. The hook still picks up the bobbin thread and wraps it around the bobbin case for the next stitch as per normal.

Don't get it! Leave the bobbin and bobbin case where it is, just static have the thread come out of the same hole of an empty bobbin.