Hi
I have tried out the blade-tech sharpener it seemed to work very well on my S.A.K.and my Opinel pocket knife and did not appear to change the profile of the blade the cutters are fixed in place this could be why the blade on my cheapo multi tool that I use for work didn't fare so well it's quite thick and appears ground to a steep angle .Someone with more technical know how could explain it better but I am sure I will get there eventually the Yard is a great place to learn!
