I do a lot of wax work usually using an injection wax to do build
up.
If I’m doing, as I am now, a special model, my preferred wax is
purple hard wax. If one uses various grits of sandpaper you always
leave scratch marks, finer and finer, but none the less scratch
marks.
After I rough out the model and when I’m getting down to the
finished product; I use nephrite scrapers: Cut- offs, little pieces
that are left overs from some lapidary job.
Nephrite may be the toughest stone there is. These pieces are less
than a mm thick. I’m also a lapidary so I have stone cutting
equipment to shape the scrapers. I have flat scrapers, concave
scrapers, and convex scrapers of various sizes. They leave a finish
smoother than a baby’s bum.
KPK