Joq21KME has a design flaw, similar to Gatco version of this Lansky.
Difficult to verbalize, but the guide rod must be in line with the surface of the stone.
Lansky solution is somewhat rudimentary, but if assembled properly, the angle between the stone and blade remains constant, which is the entire point of all these guided systems.
The KME and Gatco have a design where the guide rod and stone are on different planes, so the angle constantly changes during each stroke.
Lansky system is seriously versatile, has a nice steep learning curve, it's expandable, and affordable. The results are as precise as the user has patience for, but there's no inherent flaw to struggle against.
Lansky system is seriously versatile, has a nice steep learning curve, it's expandable, and affordable. The results are as precise as the user has patience for, but there's no inherent flaw to struggle against.