Great little device! [SEP] I love this machine, have 3 of them.  Take easy, proceed gradually!  Remember to replace the blades when they become dull. Edit: to Cindy: the powder from your callous builds up in a cup under the rotary n u have to easily take apart each time n blow it out or shake it, etc. I purchase 1 more when the came down in price. I love these things, much more than Amope. That's sand paper roll going around but these have such a good blade u have to use it responsibly or u can cut your feet, but so effective!!! If used properly!!!!  Go slow as some people have mentioned n be persistent. A couple times a week go over your feet for a few minutes. My feet were like that gentlemen's. I too was on my feet up to 16 hours a day. My feet cracked n bleed. The best moisturizer on market right now i think is Curel Hydratherapy. I have asked Derms at work n they usually say Curel. Vanicream is excellent but I find it too greasy. After using this device hydrate your feet n place cotton stockings on. Do this at bedtime too if it's really bad. I love this product, im sorry if some of u have had mechanical problems. I've used 4 of mine n I had one problem w the wire getting broken inside. I called the company n they sent out a new wire immediately. My feet are silky smooth!!  What a mess they were 15 years ago!!!!  TO JOE:  are u reviewing the correct product?  I have 4 of these because I loved them so much n never wanted to be without n u r describing this device incorrectly.  You do no charge this unit. It comes with an electrical cord like an iron n that provides electricity/power. There is no charging. I've had the 1st models n the last for sale models n I think I r reviewing a different device. Another edit!  The customer who said this isn't supposed to be an electric sander is correct.  Yes, it stops if too much pressure, it's suppose to. Another customer said the blade was not rough enuf. Yes, eventually u will need to replace blades, but metal against skin should last quite awhile. I bought several blades when they came down in price. The customers that don't like it seem to be using it incorrectly from the start n misunderstanding the mechanics of it.  It's really great n sad Amazon is not selling it right now.  I have gotten so many people on this device!!!!