With the Tormek SVH-320 Planer / Jointer Blade Sharpening Attachment jig the tool is guided precisely and ground flat along its whole length to a pre-set fixed depth. This is not the case with the other Tormek jigs, where your hand decides where the grinding occurs and the depth of grinding.
For blades of any length.
Blades longer than 270mm (10½-inch) are relocated in blade holder and ground in two steps
Grinding depth can be set within 0.1mm (0.004-inch). Min width of blade 13mm (½-inch)