These gravers are used to engrave pictures or to set stones. They
can also be used to remove material wherever that is needed.
There are different forms (cross-sections): knife-form, 90 degree
angle, 60 degree angle, oval and so on, they are cut sharp on the front.
The technic is to set the graver tip on the material under an certain
angle and apply pressure on the back. In this manner there will shavings
cut out of the material. The art is to give always the correct pressure
and hold it in the right angle. Another critical point ist to sharpen the
gravers in the appropriate angle.