Along with using a center punch to help ensure your drill is aimed at the correct spot, you should also use the right lubricant. "Unless you're drilling through thin sheet metal, use a lubricant ...

With the fate of repetitive motion injury looming due to the need to drill 1,200 holes, [bitluni] took matters into his own hands and built this nifty DIY hole punch for light-gauge sheet metal.

Reddit user [thetelltalehart] has been making brake press tooling with 3D printed PLA, and recently shared an interesting picture of a hybrid brake press punch ... such as sheet metal is formed ...