Quote Originally Posted by hemmjo View Post
You would have to have a big hose as small one would restrict the air flow and reduce nailing force. Similar to putting a small exhaust outlet on an engine.
We tried doing just that with a 4 ft section of 3-inch shop vac hose. The problem is not just the diameter of the hose, but the column of water trapped in the hose adds to the restriction. 5 or six feet under water doesn't have much effect but when down say 20 to 30 feet even the natural increase of water pressure starts to show some reduction in the amount of power pneumatic power tools could produce. When I was rebuilding marinas on local lakes, I wasn't using the nail gun as much as a drill and impact wrench sometimes as deep as 45 feet we had to turn the pressure up on the compressor a little. While working offshore we had hydraulic power tools