The Amazing and private lives of a 156c bur!
By Gerry Lewy
There are numerous names for this fantastic bur; Undercutting bur,
Hart Shaped bur, Bearing cutter, and of course the generic…156C.
What ever name you wish to call it, they are all the same. Plus they
all do the very same job…aiding to set stones!..
I’ve always known Hart burs as hart burs, but love the “flying
saucer” description. I’m working from a set that is probably 20-30
years old, and had to add more small burs for the never-ending flush
settings. I love to see my students’ confused expressions when I
say, Hart burs!