Pneumatic hammers make the carving go faster than by hand, of course. Instead of 2-3 bpm they're going 2-300 bpm. Additionally the force of impact can be less per beat, which makes the stone less likely to split or bruise. My main hammer is the Trow&Holden ¾" B. It's a good all-around ½" shank hammer. ![[TypeB.png]] My other hammer is their Bantam. It's smaller and more easily handled, with a proportionally lesser impact. It uses 5/16" shank chisels. You can also get an adapter to use the Bantam chisels in a B, but I wouldn't recommend it due to the higher impact damaging the smaller chisels. ![[Bantam.png]] I use them with a Staubli Quick-Connect. It has a two-stage push button release, the first stage stops air flow stays connected, the second stage is fully disconnected. Why I like this: I set my airflow to a particular setting that I like, and it's sometimes hard to find that sweet spot. If I used the airflow value to turn the hammer on/off I'd lose that hard-fought setting.