Testsew to see if the stitch is to your liking. I used a narrow one with left and center needle. Set the machine for coverstitch narrow or wide, as you prefer. The machine I used is a b42 Coverstitch machine (but the same applies to the b48). my procedure would be as per following description. Then I find it easier to insert the gut binding fabric into the foot before attaching it to the machine. I recommend to cut bias tape, or actually cross grain knit, at a width of 40 to 45 mm, depending on the stretchability of the fabric. … the graph of the folding of the binding fabric… This is one of these examples: How to get a successful and nice result in using the Binder attachement on the bernette FUNLOCK b42 or b48?īut from the beginning: Dear Agnes from South Africa – you found an error in the instruction manual. But some of these tips develop due to an inquiry of a user not getting the results by following the instructions in the manual. Many of these instructions are only developed after a product has been launched as the time prior to launch is not sufficient to try all the possibilities. Part of my job as educator for overlockers/sergers at BERNINA International includes writing of tips and tricks on how to use our products.