Safe Handling of Portable Power Drills Portable power drills are one of our most useful tools and, with care, they can be among the safest.  But electric drills can be dangerous if not handled carefully.  They can cause injuries in many ways – from being struck by flying drilling material, if chips of the materials being drilled are flung into the operator’s eyes or if the bit punctures or bores into flesh (usually a leg), and from electric shock. When drills are treated roughly, dropped or hit against things, or if they get wet, their insulation can weaken.  Without proper insulation you...