How often should I grind and polish the base edge with the drop files?
At each sharpening, we advise you to do 3 to 4 round trips with the long grain 400 diamond file. This removes roughness.
When there is noticeable damage, it must be removed or reduced with the long grain diamond file 200 and then finished with the long grain 400 diamond file to polish the underside of the edge.
If structures (which are necessary for the proper functioning of the base plate) are under the edge, grinding them out with a long grain 200 and then 400 grit diamond file is essential for the proper functioning of skis and snowboards.
Be careful, do not use long diamond files without lime guides!