I have since tried again...sharpened the chisel again, and used aluminum underneath, and it DID work. Took more like 4 blows, not the two in the video, and a FEW little strands sticking out...but I notice even the guy in the video only rubs his fingers over the end after assembly, not right after it's cut. I would say it DOES come out a little cleaner than the tape and grinder method...