I'm sure Ricky Bennet is either using Diamond coated tooling or Carbide.
You can purchase tooling that have a Diamond coating.
I'll see if I can find a few links and post those with the tooling thread.
In memorial_pic2, It appears that he is using a single flute 60° V-bit carbide tool.
In sample1.jpg and sample3.jpg, I think he's using a 30° V-bit of some sort with a flat on the bottom. ( probably a bottom on all of his tooling )
And I'm sure his spindle speed is very low. Probably no higher than 4000 - 5000 RPMS.
I scanned a buisness card and scaled it to about 5.875 inches wide to 3.750 inches in height.
I used a cheap carbide V-bit from Lowes. I think it was a Bosch brand ( I don't know who makes it for them ).
- Feed = .200 per second
- Spindle Speed = 1300 rpm
- Maximum Depth =.1655 inches
- Step Down = .050 inches
- Total Machine Time = 1 hour 14 minutes
- Material = Granite Counter Top
- Finish = Large Text and Graphics painted Blue \ Small Text painted yellow