Which drill NOT to use for installing anchors in CMU backup

If you’re installing anchors into a backup material of CMU, you may be wondering which drill is best to use - an electric hammer drill (also known as a 3-jaw chuck drill), or a rotary hammer drill (also known as an SDS drill). The best one to use hands-down is the electric hammer drill/3-jaw chuck drill, and this video shows you why. Check out how much more base material is blown out the back of the CMU when using a rotary hammer drill (SDS). This demo makes it plain to see how less blowout means a stronger anchor connection in your wall.
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