For serious discussion of the controversies, approaches and enigmas surrounding the origins and development of the human species and of human civilization. (NB: for more ‘out there’ posts we point you in the direction of the ‘Paranormal & Supernatural
’ Message Board).
Steve Clayton "Even with all of this pressure, it would never be able to cut through rock"
The system was used to carve not Cleave stone.
Go to any modern cemetery you will find that "Sand Blasting Machines " are used to put numbers and names on granite head stones! With Gang pumps or several man powered pumps in line, your volume and pressure needs can be meet with small diameter pumps.