I used bulino dots to sign this knife. First I'm laying out the letters by scretching lightly and then I go over them and poking dots.
I'm using four techniques to make dots for scenes.
#1. A 3/32" square graver with its face sharpened at 45 degrees and without a heel. Without a heel, so that it will dig in quick. (I'd use Phil's or Dario's bulino point now though) Poke in and pop out a chip. It will make a diamond, oval or dash shaped dot depending on what angle it is popped out at. You will be removing a chip with this method.
#2 Same as above but don't pop it and leave the bur. A collector/customer once sent a Fracassi knife and asked me to repair a scratch that was through a scene on the bolster. In the piece Mr. Fracassi left the chips standing. Granted they were small but were above the surface. I have seen another piece he did that he must have popped the burs out.. so he must use several techniques.
#3. A pin vise, holding a 1/16" dental carbide bur that was sharpened to the shape of a needle. Held like a pencil, push in, pull out. It will displace the metal rather than cut it away like #1 does. This is the same technique for scriming dots.
#4. Same dental bur as #3 but held in the AirGraver with 3/32" round x 1/16" brass tubing. I hold the AirGraver similar to jewelers screw driver with index finger on the back of the handle. Held approx 90 degrees to the work and use it to lay down a lot of dots quickly in the less sensitive areas of the scene.
For dots with #4 in the AirGraver I'll use a dental bur ground to a point and inserting it into a piece of brass tubing.
The dot holder pictured for the AirGraver is a 3/32" OD x 1/16" ID x 7/8" long brass tubing with a sharpened carbide bur in it. For backing behind the bur shank is a second bur shank that is cut off. I'll slightly squish the brass tubing with a pair of pliers so that bur shanks fit with somewhat of a friction fit. K & S I beleive has this size tubing: Google search
The other item in the pic is a brass punch for hammering in gold wire with the AirGraver.
Here are past threads about bulino:
http://www.engravingforum.com/showthread.php?t=1102
http://www.engravingforum.com/showthread.php?t=2315
http://www.engravingforum.com/showthread.php?t=60
http://www.engravingforum.com/showthread.php?t=1409
http://www.engravingforum.com/showthread.php?t=1313
http://www.handengravingforum.com/showthread.php?t=60
http://www.engravingforum.com/showthread.php?t=319