Yes, the plexi scraper can be sharpened with a sharpening tool.
The plexi scraper, which is used to remove glide wax under the skis, must be sharp for you to get the desired result. You may find that the edges of the plexi scraper becoming more blunt as it is used. Then it is important to sharpen these with Swix T408, T412 eller T410 grinding tools for plexi scrapers.