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DIY Home Repair Forum: Tools 01-03-2013, 08:38 PM
Replies: 1
Views: 770
Posted By kurango
How much faster Rotary Hammer vs. my Hammer Drill

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 concrete....
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