03-02-2018, 11:25 AM
Hi John Lucas, welcome to the Forum! It's great to see you here. 
I've been in the furniture, cabinetry and finish carpentry trades from an early age. I retired from residential and commercial construction to sharpen and make knives about 8 years ago.
Just to be fair, this isn't a sharpening technique. I'm not sure of the term for fixing carbide particles to the edge of a blade, but it isn't new. I've been using carbide coated blades for different applications of woodworking and construction for many decades. The jig saw, hack saw, circular saw and side grinder blades are obviously disposable, and I would certainly consider the advertised knives disposable as well. They aren't sharpen-able.
I think they would measure exceedingly dull out of the box. The edge thickness would probably not be less than 50 microns, and could easily be double.
Like Ginsu knives, they are more saw blade than knife edge, IMHO.
I've been in the furniture, cabinetry and finish carpentry trades from an early age. I retired from residential and commercial construction to sharpen and make knives about 8 years ago. Just to be fair, this isn't a sharpening technique. I'm not sure of the term for fixing carbide particles to the edge of a blade, but it isn't new. I've been using carbide coated blades for different applications of woodworking and construction for many decades. The jig saw, hack saw, circular saw and side grinder blades are obviously disposable, and I would certainly consider the advertised knives disposable as well. They aren't sharpen-able.
I think they would measure exceedingly dull out of the box. The edge thickness would probably not be less than 50 microns, and could easily be double.
Like Ginsu knives, they are more saw blade than knife edge, IMHO.