At the end of last season on some end of season deal, I bought a wild boar hair rotobrush. List for $91 but it was 40% off I wasn't even sure why I wanted it but it seemed like such a good deal I bought it. I know that sounds silly and impulsive and I don't deny it. It is however frickin' awesome!
I started my process of cycling wax through mine and my daughters skis. Since they all have fresh stone grinds, I don't want to use any metal on them to include brushes. I was doing my usually routine of roto and oval horse hair and nylon, when I noticed this little box with a Swix rotobrush in it and saw it was a wild boar hair one. Forgot I even bought it since it was at the end of the season when I got it. I knew I bought the oval one but forgot about this one. This thing is wonderful. After I scrape it is one "maybe" two passes and I'm done. It is a very stiff brush and does wonders at removing what the scraper left behind. Even the slightly harder race waxes. I'm talking to the point that when you run your finger across the base, there isn't a wax trace or finger prints.
You still have to scrape thoroughly because I don't think the brush can/should do the scrapers job but it made child's play of brushing out the skis.
Very impressed. The rest of my brushes may indeed get a season off.