I've been using knockout sets for at least 40 years. Hard to imagine doing electrical work without a set.
One of those irksome things to me is when someone uses a "homeowner" drill or drill bit on a job. It takes longer and the results are unpredictable. I have a black and decker industrial drill, industrial jig saw, and industrial hammer drill so I don't have to mess around with tools that can't do the job. I have 3 sets of high quality drill bits. If one gets dull, I pull out another until the dull bit can either be sharpened or replaced.
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