Old Bernina needle timing tips?
I've seen the youtube vids of needle / rotary needle bobbin timing for various machines, but none of the rotary needles look anything like my 117 and 540 rotary needles, so it's hard to relate them. Does anyone have any tips on how to time the Bernina 117 and 540?
What's the 'standard' way of doing this? (I can do it blindfold with a motorbike motor!)
Is it a matter of aligning the rotary with the needle when fully down? or when it's just entering the bobbin? Or what?