So far I have the callus removal carried out either with a specially designed grinding cone a pedicure device, or went to the foot care. Especially in winter the skin on your feet is dry and cracked, and I was curious to see if the device creates as much as the small, rapidly rotating grinding cone, the professional machine. To make a long story short this was not the case. I have honed for more than 20 minutes of my sole around until I've seen the same success as in the foot care or my pedicure device. The sanding attachment atomizes the cornea fine as flour and you should take care during treatment for a good base and possibly wearing a surgical mask, if you do not really want to inhale this fine dust.
The paper with the fine sandpaper concluded used to flatten the slightly roughened skin a little. With the result I was indeed happy, but it has cost a lot more time to achieve it, as in the previously used by me methods, because the performance is a little weak in my opinion. After two applications, I now now feel the sandpaper should be replaced.
My conclusion: A Callus which lies comfortably in your hand, is easy to apply, but the bringing in my opinion, better performance would have to be as effective as a professional pedicure device. 3 star from me for it.