Diamond grit size 400, long...
Diamond grit size 400, long and resistant, adapted to the bevel file guide
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LD400 is the long diamond file with the third coarsest grit (size 400) in our assortment. It allows polishing to eliminate small scratches under the edges. It is necessary to refine the work of the LD200 and bevel file RACE LTR.
For better performance in racing, we advise refining the work of the LD400 by light grinding for a high finish with the LD800.
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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!
The ideal is to file the first time and later to use Roto-Finish.
After filing, there is no need to fine-tune with Roto-Finish.
However, for the competition, especially if the snow is very cold and fine a polishing with Roto-Finish 400 then 800 will improve the glide.
When you have skied for a few days on soft snow that has very little rounded edge, it is not necessary to file. You can then limit yourself to three or four trips with the Roto-Finish 400.
When you've been skiing for a day or two on hard snow, you can sharp with the Twin Roro Concept, which consists of 10 to 12 round trips to the Roto-Finish 200 followed by polishing with the Roto Finish 400.
This polishing will be done either by 6 round trips with the roto-Finish 400 set to a degree less than the Roto-Finish, or without changing the angle (same angle as the Roto-Finish 200) but with a dozen or so back and forth.
If by 12 round trips to the RF200 you have not found the cutting edge, add some back and forth. If it is still not sharp it means that your edge is quite rounded and it is better to make a sharpening file.
In general, if you don’t do frequent sharpening use the file.
This is a personal practice that also varies depending on the ski models and / or the quality of the snow. Some do not round, others little and others more and this on different lengths. In general, we avoid rounding skis slalom and personally I do not round in heel even when it comes to longer skis.
For snowboards, it is advisable to round the front of the edge "front side" about 15 cm.