Just a quick video showing multiple ways to drill big holes in thick steel. We were using 1" thick steel flat bar. Showing how use different types of drill bits to put large holes in big pieces of metal. We timed each process to detremine which way is faster?

First we used an annual cutter, next up 3 different size twist drills, and lastly a regular hole saw. You might be surprised with the results.

You could easily use this same fast process to drill big holes in aluminum, iron, arn, and metal.

These are basic processes and skills

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