If you’ve ever drilled tile or glass, you already know how fast it gets expensive. One bad start, one crack, one chipped edge, and the piece you paid for is done for. In this video I put Spyder Diamond Edge hole saw bits on my bench and ran them through ceramic, porcelain, and glass to see what actually happens in a real-world setup—not a lab test and definitely not a polished product commercial. I also covered the basics that matter: no impact driver, no hammer mode, and how I start freehand cuts at about a 45° angle before leveling out. Ceramic was the confidence builder. I went 5 for 5, and it gave a consistent baseline that would make most DIYers feel the least nervous. Glass delivered the clearest lesson of the whole test: dry glass broke, wet glass worked. Porcelain was where it got serious—4 out of 5 completed, and it was the material most likely to punish a bad start or too much pressure. I also compared drilling methods. The drill press was fastest in my testing, but it wasn’t a perfect apples-to-apples comparison because bit sizes and setups varied. The real takeaway is simple: material, water, and control matter—and if you’ve got water available, use it.