Bought this 0.5mm diameter diamond coated wire from Aliexpress. Comes in various lengths but I tried a few at 1m packages (its pretty cheap). Seems to work excellent on composites which is normally brutal on any HSS blades. The G10 plate is in my scroll saw under power. The carbon fiber plate is in my jeweler hand fret saw. It comes in both larger & smaller diameters. I think its use is for lapidatr work, the word 'jade' comes up often. I'm sure there are other material applications for the stuff. Not sure how long lasting it will be, time will tell.