Assess Material Hardness with Initial Test

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Hammer drill or rotary hammer

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What happens here

The video begins by demonstrating the difference in performance between a hammer drill and a rotary hammer when drilling into a very hard, natural rock. The hammer drill struggles significantly, generating a lot of dust but little penetration, while the rotary hammer penetrates much more effectively and quickly. This initial demonstration helps in assessing the hardness of the material you need to drill.

Goal: Determine the hardness of the material to be drilled.

Tools and materials

Hammer drill Milwaukee M18 Fuel — Initial drilling attempt on hard material to demonstrate limited effectiveness
Hearing protection N/A — Ear protection from loud noise
Large rock N/A — Material for initial hardness test
Safety glasses N/A — Eye protection from dust and debris

What they say

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Most homers don't need an SDS rotary hammer, but this is when you do. Let's get after it. If you're drilling a few small holes in cinder block or masonry, a drill with the hammer function will usually get the job done. If you're drilling larger holes or you want to chip away at some concrete or you just do this kind of stuff every

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