I bought my bobbin winder when I bought my HQ16. It is NOT a sidewinder but something that can easily do the class M bobbin my HQ takes as well as bobbins for my regular sewing machine. Since this was years ago there was any way to slow down the winder ... then I saw a pedal that the winder could plug into and I could use like the a sewing machine pedal. Now I can regulate the speed of the winder.
Now the same winder does have a speed control built in. Wish I had that years ago. Oh well.
ali