Bush hammer or pneumatic point

Quoted text begins.have you ever used a pnuematic chipping hammer with a point
End of quote.

Hi Bill,

I decided to put my reply before StoneListers, hope you don't mind.
My messagesto you are bouncing back.
I have used long-shanked bush hammers like these:
< http://www.cdkstone.com.au/REXID/Tungsten/PN%20Page%207.pdf >

They don't work. The air bottle bounces up and down on the tool
instead ofpassing the striking force through the tool
into the stone, because it is too heavy.

Granite carving is easiest when you exploit the weak tensile
strength of thematerial. Using a hammer and point, with a
few steep blows you first make a small seating or pit behind
a knob you want to remove. Then you lay the point at a shallower
angle to the surface and strike the knob sideways. A pneumatic point can
never develop the striking force necessary to separate granite crystals, it
only digs pits into the surface.

A four point - 3" long, 1/2" diameter shank, with four cusps of
tungsten carbide brazed onto its face - transmits the striking
force of the air bottle directly into the stone and pulverizes
the crystals into powder. It's held between third and fourth finger
and is kept moving over the granite surface. Good for dressing
a face prior to honing.

I have never used a carving pick like this one:
< http://www.cdkstone.com.au/REXID/Tungsten/Page%2010.pdf > and
I think it would be difficult to vary the angle of rotation of
handle around the head while you are working. With my luck, it
would probably miss my hand and drive deep into my kneecap.

Regards,
Simon