I'm on vacation and in a mad scramble to get stuff ready before the quilt show in Coburg OR this Saturday, and hoping it doesn't rain, THAT day TOO! But here is the latest version of the "Miriam" style, DIY knob. [ATTACH=CONFIG]484762[/ATTACH]
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Sew, altho it clamps the rim pretty securely, it still allows for either style of bobbin winder. [ATTACH=CONFIG]484764[/ATTACH]
I can use the smaller (cheaper) 1/4" hardware, but it requires putting a recess in the end of the knob, which I do with a special drill bit used in wooden pen making. I found a different 1/4" J bolt that I think will work without a recess. Oh, BTW, there is another nut, hidden in a recess in the other end of the handle, which is actually used to clamp the rim. The handle spins freely. The machine will spin freely a couple turns till the weight of the handle, returns it to the bottom. This can be very handy if you are doing something where you prefer it to stop on a needle-up or needle-down position.