Has anyone experience of the so called 'professional knife sharpener' being advertised on TV and on the web? It consists of an 'X' of spring-loaded plastic rods with tungsten steel inserts. The price varies between £30 for the metal framed one and ~£6 to £12 for the plastic framed version. I have bought the latter and apart from not 'touching' my Sabatier knives, one of the tungsten-steel inserts has already fallen out of its slot. Am I just unlucky or are they crap?
I'll get my money back, no doubt, but that's not the point.