ZELCAN 10 Sizes Titanium Step Drill Bit, 1/4 to 1-3/8 Inches High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers Electrician

For starters, I used this YouTube video to help determine where to place the hole: https://www.youtube.com/watch?v=Da0gHrkINSo&t=229s Following the instructions, I marked the location and drilled a pilot hole using a small drill bit. From there, I used a step bit to drill a 1 1/8 hole. For the most part, the step bit did a good job of removing the burrs that are sometimes left behind, so the final step was to mask around the hole and then spray this high-heat spray paint on it to cover the exposed metal.