New skis can come from the factory with bases that aren’t flat edge to edge and this can greatly effect the skis performance. A straight metal edge or True Bar is used with light behind it and you move along the ski looking for areas of light shining through below that Bar.
On an edge high ski, the areas near the side edge will be higher than the middle of the ski. The lower section will allow light to shine beneath the test tool. An edge high ski like this will be slower edge to edge, feel “locked in a turn”, harder to pivot and more tiring to ski.
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A Base High ski will allow light to shine on the sides under the True Bar, showing the Center of the base is higher than the edges. A base high ski will feel very surfy especially if those sections are underfoot. It will feel as if you’re skiing on marbles with your balance and confidence greatly effected.
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If you encounter either or both of these situations along the ski, a stone grind will be performed in order to level the higher sections and make the bases more even across.
After the base level is satisfactory, the skis edge bevels should be checked if they are uniform along the whole edge. A base bevel that’s not uniform near the tips and tails is a common issue.
After the edge bevels are set by hand with a file, use increasing grit diamond stones to further refine the edges and eliminate the typical coarse factory finish. This coarseness is what you are probably feeling. Diamond stone will make the edges faster and less gabby.
Hot wax and you’re good to go!