Late one evening, just before the approaching holiday season, our Head of Software Development Masa heard a knock on the office door. To his big surprise, there was one of the Santa’s elves with a pair of skis. The elf was invited into the visitors’ showroom where he told Masa that he needed some help with Santa’s skis.
The skis need to be in top shape for Christmas because not every house can be reached by the reindeer sleigh, especially if the snow is soft and deep. Now the skis did not glide as smoothly as they should and Santa wanted to find out the reason for this.
Masa was so excited and more than glad to help Santa in his important work and so he measured the skis with UULA. The 3D images showed that there were some scratches and burned areas in the ski bases that don’t absorb wax. Masa suggested to the elf that he takes the skis for stone grinding.
The next evening, the elf returned with the skis and Masa measured them once more. Immediately, they both saw the effects of grinding in the 3D images. Later, Masa sent the elf a detailed report including measurements before and after grinding.
Masa just learned that Santa had been very happy not just with his fast gliding skis but also with the report Masa provided. Each elf has at least a dozen pairs of skis and they need to be inspected every winter which is why Santa is now looking for someone who can build a quality inspection line with FocalSpec sensors at his ski workshop.
Measuring surface texture of skis with FocalSpec sensor
The skis were measured with 3D Line Confocal Scanner UULA, equipped with a LCI1201 sensor.
The link to the interactive 3D model of the skis before and after treatment.
Figure 1. 3D profile of ski before grinding. One deep scratch, several smaller scratches and wax residues are visible. There’s no even structure.
Figure 2. 3D profile of ski after grinding and waxing. A deep scratch is still visible but smaller scratches have disappeared. There’s an even structure.
Table 1. Typical roughness profile before grinding.
Table 1. Typical roughness profile after grinding and waxing.
Figure 3. Surface structure before grinding.
Figure 4. Surface structure after grinding and waxing (same location as in the figure 3).