What a coincidence, Steve! Yesterday I was engaged in the same activity. Since my teens I've had a malformed large toenail resulting from the nail being removed to deal with an infection. about every 6 months I would give it a hack to keep it in trim. However in recent years I seemed to have neglected it and it has become quite large; way beyond my old treatment methods. What to do about it? For some time I had been thinking that my Dremel may find a new use, so yesterday I was in the workshop with little else to do. Shoe off, sock off, foot on stool, drum sander on Dremel - off we go. It worked amazingly well and in 10mins the job was done if a little untidily.
There was only a little spot of blood which was quickly cauterized with my 15W soldering iron**.
Fortunately my eyesight is not to bad with the help of specs and I've managed to keep my belly profile in better shape than my toenail so direct line of sight available - no need for a mirror!
It feels a little bruised this morning but when it's settled down I might have another go at it; you know, down through the grades and bit of French polish to to make it beach acceptable.
Brian
** in the absence of SawStop I have a 100W iron for larger injuries #-o