Accurate Holes in Masonry
With a slotted drive shaft rotary hammer/hammer drill it can be difficult to drill accurate holes. Learn how to get better holes in masonry.
Nobody likes drilling into stone, brick, or block, but using a slotted drive shaft rotary hammer or hammer drill with a carbide bit can make short work of the task. Due to the tool’s hammering action, however, it can be difficult to get the holes to go exactly where you want them. A trick to aid in this is to start your holes using a regular drill with a glass-and-tile bit, which is readily available at home centers. Once you have your hole started exactly where you want it, switch to the rotary hammer to finish it.
—David Schmid, Indianapolis, Ind.
Edited and Illustrated by Charles Miller
Published in Fine Homebuilding #306
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Perhaps if one simply turns off the Hammer option to start a hole, then switch over to Hammer+ Drill once the hole is accurately started.
Just a thought.