I use a guitar string doubled over and its worked well in 1.75mm. Yes, be sure to taper. Another thing I do is to push the outer part of the bury together BEFORE I begin the process. I find this loosens up the outer portion a bit and makes it a shorter pull when I'm burying. Another trick that I sometimes use is to push a larger needle through the bury first. Yes, patience is a virtue when working the small stuff. Hope this helps and good luck.