Last Activity:01-04-2013 3:29 AM
Posted in thread: How much faster Rotary Hammer vs. my Hammer Drill on 01-03-2013 at 09:38 PM
I have a 7.5 amp motor hammer drill. This hammer drill takes me 40/45 minutes to drill a 3/8"
hole 2.5" deep, drilling into beach rocks. It take me a few seconds to drill the same hole into