So the way these industrial machines are designed to be used, they assume you are running two spools of thread all the time, with one running the top thread, and the other winding a fresh bobbin. Great system in a factory where one machine does the same task all year long.
Most of us I would have thought only run one spool, the cost of having two of everything is prohibitive for me, and if one is switching back and forth one might not run any one color long enough to wind a spool. So the alternative method is to wind spools with the whole machine rattling away. I have to adjust the speed, rethread, and I just don't really like the set-up, and it is the same junk different machine with all my machines.
What I would like to have is a winder so I can run off properly wound bobbins on command in all my sizes at will, and at speed, but I don't think such a device exists. Probably have to make something. It does seem to me that there is a fair amount of cost to building out the winder that is on my class 4, but it is not appropriate to the way the machine is used. I wish they would cut that part off and supply a separate winder, preferably one that would work with a few standard industrial sizes.
I imagine some people only run one color of thread, but while I use an off white most of the time, I can't use it all the time.
What do the rest of you do? Are you happy with it.?