You conveniently feed the diamond cutter across the stone by alternately turning the two knobs with both your hands. Thanks to the controlled feed, you get an even and flat stone surface with no ridges.
Controlled cutting depth
The cutting depth is set exactly by the Micro Adjust on the Universal Support. The scale has increments for each 0,25 mm or 0,01". Watch the video for a demonstration on how it works.
Create a coarse or fine surface
With a higher feed speed across the stone (approximately 30 seconds instead of 90 seconds) the surface will have pronounced grooves, which will cause the stone to grind faster. This is beneficial, when sharpening or shaping tools in hard steel with a large bevel area, e.g. turning skew chisels and electric jointer/planer blades.
The slower you feed, the finer the surface you will achieve. A traverse time of 90 seconds across the stone gives you a good finish with hardly any visible grooves.