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.

"Unless you're drilling through thin sheet metal, use a lubricant," the expert explained. "I tend to use thread-cutting oil for everything, but there are many options. Not lubricating will dull ...

you can drill through most metals at 3,000 rpm. For larger twist bits (11/16 in. to 1 in.), 350 to 1,000 rpm is recommended.